What's in a language? Dr Laurie Tratt breaks it down by creating a brand new programming language by writing an interpreter in a few lines of code. Computerphile is supported by Jane Street. Learn more about them (and exciting career opportunities) at: https://jane-st.co/computerphile Dr Laurence Tratt is programmer and the Shopify / Royal Academy of Engineering Research Chair in Language Engineering in the Department of Informatics at King’s College London This video was filmed and edited by Sean Riley. Computerphile is a sister project to Brady Haran's Numberphile. More at https://www.bradyharanblog.com

Modern CPUs manage to speed up even the simplest code, Matt Godbolt explains how there's a lot of juggling going on even in the simple use of registers. Computerphile is supported by Jane Street. Learn more about them (and exciting career opportunities) at: https://jane-st.co/computerphile This video was filmed and edited by Sean Riley. Computerphile is a sister project to Brady Haran's Numberphile. More at https://www.bradyharanblog.com

Malleable encryption means you can flip a bit in the encrypted message and the corresponding bit is flipped in the unencrypted plain text. Dr Tim Muller gives us some examples. nb This video is a reupload due to an audio problem with the first version. For those interested there were tones at approx 2.1k and then at approx 5.5k & 9k - guessing computer fan noise as there were a couple of occasions where it changed frequency slightly possibly as it sped up or slowed down. Computerphile is supported by Jane Street. Learn more about them (and exciting career opportunities) at: https://jane-st.co/computerphile This video was filmed and edited by Sean Riley. Computerphile is a sister project to Brady Haran's Numberphile. More at https://www.bradyharanblog.com

Ray Tracing seems straightforward, but what about reflections and refractions? Lewis Stuart explains how these are managed by a spot of recursion! Computerphile is supported by Jane Street. Learn more about them (and exciting career opportunities) at: https://jane-st.co/computerphile This video was filmed and edited by Sean Riley. Computerphile is a sister project to Brady Haran's Numberphile. More at https://www.bradyharanblog.com

You say "bye" first! - no, you say "bye" first! - how do you know when to close the connection? Dr Richard G. Clegg of Queen Mary University London talks us through this frustrating network problem. Computerphile is supported by Jane Street. Learn more about them (and exciting career opportunities) at: https://jane-st.co/computerphile This video was filmed and edited by Sean Riley. Computerphile is a sister project to Brady Haran's Numberphile. More at https://www.bradyharanblog.com

The 2024 Nobel Prize in Physics is awarded to John Hopfield and Geoffrey Hinton “for foundational discoveries and inventions that enable machine learning with artificial neural networks”. This video features Juan Garrahan, Phil Moriarty and Mike Pound... More links and info below ↓ ↓ ↓ Nobel Prize press release - https://www.nobelprize.org/prizes/physics/2024/press-release/ Phil Moriarty blog (and vintage rant) on the prize - https://muircheartblog.wpcomstaging.com/2024/10/18/when-is-a-physicist-not-a-physicist/ More Physics Nobel Prize videos - https://www.youtube.com/playlist?list=PLcUY9vudNKBNRA7qR5KbgdY1c5IWIJcqf Chemistry Nobel Prize videos - https://www.youtube.com/playlist?list=PL9eEsN9D48mddEnxhyfM44MCw4F3PohOI The 2024 Nobel Prize in Chemistry (also AI related) - https://youtu.be/KMfgV2QSlns Sixty Symbols (physics channel) - https://www.youtube.com/sixtysymbols How AI Image Generators Work - https://youtu.be/1CIpzeNxIhU Juan Garrahan - https://www.nottingham.ac.uk/physics/people/juan.garrahan Phil Moriarty - https://muircheartblog.wordpress.com Mike Pound - https://www.nottingham.ac.uk/computerscience/people/michael.pound Computerphile is supported by Jane Street. Learn more about them (and exciting career opportunities) at: https://jane-st.co/computerphile This video was filmed and edited by Sean Riley. Computerphile is a sister project to Brady Haran's Numberphile. More at https://www.bradyharanblog.com

More about Jane Street internships at: https://jane-st.co/internship-computerphile (episode sponsor) Mike Pound discusses how Retrieval Augmented Generation can improve the performance of Large Language Models. Mike is based at the University of Nottingham's School of Computer Science. https://www.facebook.com/computerphile https://twitter.com/computer_phile This video was filmed and edited by Sean Riley. Computer Science at the University of Nottingham: https://bit.ly/nottscomputer Computerphile is a sister project to Brady Haran's Numberphile. More at https://www.bradyharanblog.com Thank you to Jane Street for their support of this channel. Learn more: https://www.janestreet.com

Nearly nine million Windows machines were taken out by the Crowdstrike problem in July 2024, but why was the impact so problematic? Dr Steve Bagley and Dr Mike Pound of the University of Nottingham discuss the problem. https://www.facebook.com/computerphile https://twitter.com/computer_phile This video was filmed and edited by Sean Riley. Computerphile is a sister project to Brady Haran's Numberphile. More at https://www.bradyharanblog.com Thank you to Jane Street for their support of this channel. Learn more: https://www.janestreet.com

How CPUs that are capable can manage to complete tasks simultaneously without the program knowing. Matt Godbolt continues his series on how processors work. Many thanks to Space Potatoes for kind permission to use their music: https://2020rendezvous.com/ https://www.facebook.com/computerphile https://twitter.com/computer_phile This video was filmed and edited by Sean Riley. Computer Science at the University of Nottingham: https://bit.ly/nottscomputer Computerphile is a sister project to Brady Haran's Numberphile. More at https://www.bradyharanblog.com Thank you to Jane Street for their support of this channel. Learn more: https://www.janestreet.com

Ray tracing is massive and gives realistic graphics in games & movies but how does it work? Lewis Stuart explains. https://www.facebook.com/computerphile https://twitter.com/computer_phile This video was filmed and edited by Sean Riley. Computer Science at the University of Nottingham: https://bit.ly/nottscomputer Computerphile is a sister project to Brady Haran's Numberphile. More at https://www.bradyharanblog.com Thank you to Jane Street for their support of this channel. Learn more: https://www.janestreet.com

Bug Byte puzzle here - https://bit.ly/4bnlcb9 - and apply to Jane Street programs here - https://bit.ly/3JdtFBZ (episode sponsor). More info in full description below ↓↓↓ A new paper suggests diminishing returns from larger and larger generative AI models. Dr Mike Pound discusses. The Paper (No "Zero-Shot" Without Exponential Data): https://arxiv.org/abs/2404.04125 https://www.facebook.com/computerphile https://twitter.com/computer_phile This video was filmed and edited by Sean Riley. Computer Science at the University of Nottingham: https://bit.ly/nottscomputer Computerphile is a sister project to Brady Haran's Numberphile. More at https://www.bradyharanblog.com Thank you to Jane Street for their support of this channel. Learn more: https://www.janestreet.com

How does branch prediction speed up operations? Matt Godbolt continues the deep dive into the inner workings of the CPU https://www.facebook.com/computerphile https://twitter.com/computer_phile This video was filmed and edited by Sean Riley. Computer Science at the University of Nottingham: https://bit.ly/nottscomputer Computerphile is a sister project to Brady Haran's Numberphile. More at https://www.bradyharanblog.com Thank you to Jane Street for their support of this channel. Learn more: https://www.janestreet.com

With the explosion of AI image generators, AI images are everywhere, but how do they 'know' how to turn text strings into plausible images? Dr Mike Pound expands on his explanation of Diffusion models. https://www.facebook.com/computerphile https://twitter.com/computer_phile This video was filmed and edited by Sean Riley. Computer Science at the University of Nottingham: https://bit.ly/nottscomputer Computerphile is a sister project to Brady Haran's Numberphile. More at https://www.bradyharanblog.com Thank you to Jane Street for their support of this channel. Learn more: https://www.janestreet.com

How do CPUs make the most efficient use of their compute time? Matt Godbolt takes us through the pipeline - allowing the CPU to do work as many ticks of the system clock as possible! https://www.facebook.com/computerphile https://twitter.com/computer_phile This video was filmed and edited by Sean Riley. Computer Science at the University of Nottingham: https://bit.ly/nottscomputer Computerphile is a sister project to Brady Haran's Numberphile. More at https://www.bradyharanblog.com Thank you to Jane Street for their support of this channel. Learn more: https://www.janestreet.com

With Large Language Models becoming used across all areas of computing, security researcher Dr Tim Muller explores how they can be used for all kinds of unintended purposes. https://www.facebook.com/computerphile https://twitter.com/computer_phile This video was filmed and edited by Sean Riley. Computer Science at the University of Nottingham: https://bit.ly/nottscomputer Computerphile is a sister project to Brady Haran's Numberphile. More at https://www.bradyharanblog.com Thank you to Jane Street for their support of this channel. Learn more: https://www.janestreet.com

Your browser is using this system right now! (at time of typing!) - Dr Mike Pound explains this ubiquitous system! EXTRA BITS with some of the mathematics: https://youtu.be/7OZyHzYFSgI https://www.facebook.com/computerphile https://twitter.com/computer_phile This video was filmed and edited by Sean Riley. Computer Science at the University of Nottingham: https://bit.ly/nottscomputer Computerphile is a sister project to Brady Haran's Numberphile. More at https://www.bradyharanblog.com Thank you to Jane Street for their support of this channel. Learn more: https://www.janestreet.com

The field of Human Computer Interaction has been transformed with wearables that are smaller, more powerful and more plentiful. We talked to HCI expert Max Wilson about the use of his, ahem, one ring. https://www.facebook.com/computerphile https://twitter.com/computer_phile This video was filmed and edited by Sean Riley. Computer Science at the University of Nottingham: https://bit.ly/nottscomputer Computerphile is a sister project to Brady Haran's Numberphile. More at https://www.bradyharanblog.com Thank you to Jane Street for their support of this channel. Learn more: https://www.janestreet.com

Going hand in hand with Oblivious Transfer is 'Garbled Circuits' - a way of using logic gates to carefully share information. Dr Tim Muller explains. https://www.facebook.com/computerphile https://twitter.com/computer_phile This video was filmed and edited by Sean Riley. Computer Science at the University of Nottingham: https://bit.ly/nottscomputer Computerphile is a sister project to Brady Haran's Numberphile. More at https://www.bradyharanblog.com Thank you to Jane Street for their support of this channel. Learn more: https://www.janestreet.com

A new technique to turn pictures of a scene into a 3D model is quick, easy and doesn't require that much compute power! Dr Mike Pound and PhD student Lewis Stuart demo and explain. Lewis used this Particle simulation in Unity: GitHub - keijiro/SplatVFX: https://github.com/keijiro/SplatVFX NeRFStudio is here : https://docs.nerf.studio/index.html Previous (nerf) video: https://youtu.be/wKsoGiENBHU https://www.facebook.com/computerphile https://twitter.com/computer_phile This video was filmed and edited by Sean Riley. Computer Science at the University of Nottingham: https://bit.ly/nottscomputer Computerphile is a sister project to Brady Haran's Numberphile. More at https://www.bradyharanblog.com Thank you to Jane Street for their support of this channel. Learn more: https://www.janestreet.com

From simple rules, complex 'organisms' can emerge. PhD candidate Zachariah Garby has been studying the papers to find out what it's all about. EXTRA BITS: https://youtu.be/oFqbVJm8gw0 Zac's code: https://bit.ly/C_Zac_L-systems https://www.facebook.com/computerphile https://twitter.com/computer_phile This video was filmed and edited by Sean Riley. Computer Science at the University of Nottingham: https://bit.ly/nottscomputer Computerphile is a sister project to Brady Haran's Numberphile. More at https://www.bradyharanblog.com Thank you to Jane Street for their support of this channel. Learn more: https://www.janestreet.com

Just how simple can a web server be? Laurence Tratt, Shopify / Royal Academy of Engineering Research Chair in Language Engineering at Kings College London builds it up. More about Laurie: https://bit.ly/C_LaurenceTratt https://www.facebook.com/computerphile https://twitter.com/computer_phile This video was filmed and edited by Sean Riley. Computer Science at the University of Nottingham: https://bit.ly/nottscomputer Computerphile is a sister project to Brady Haran's Numberphile. More at https://www.bradyharanblog.com Thank you to Jane Street for their support of this channel. Learn more: https://www.janestreet.com

A graphical problem seems intuitive to a human, but how do you explain something formally to a machine? Dr. Mohammad Abdulaziz, Lecturer in Artificial Intelligence, King's College London This video was initially titled "Mechanizing Mathematical Proofs" https://www.facebook.com/computerphile https://twitter.com/computer_phile This video was filmed and edited by Sean Riley. Computer Science at the University of Nottingham: https://bit.ly/nottscomputer Computerphile is a sister project to Brady Haran's Numberphile. More at https://www.bradyharanblog.com Thank you to Jane Street for their support of this channel. Learn more: https://www.janestreet.com

Digital Twin - a new buzz word or a useful piece of technology? We asked Dr Steffen Zschaler, Reader in Computer Science at Kings College London. #ComputerScience #DigitalTwin #CS #computing https://www.facebook.com/computerphile https://twitter.com/computer_phile This video was filmed and edited by Sean Riley. Computer Science at the University of Nottingham: https://bit.ly/nottscomputer Computerphile is a sister project to Brady Haran's Numberphile. More at https://www.bradyharanblog.com Thank you to Jane Street for their support of this channel. Learn more: https://www.janestreet.com

Featuring Mike Pound. Jane Street skyscraper puzzle (and info on the AMP program) at https://bit.ly/computerphile-amp --- More below ↓↓↓ Hash Sets in Python work a little bit like the index of a book, giving you a shortcut to looking for a value in a list. Dr Mike Pound explains how they work and demos with some code. #Python #HashSet #Code #Computerphile Jane Street’s Academy of Math and Programming is now accepting applications for their summer 2024 program, which will run from June 29th-August 2nd in NYC... Or you can just check out the puzzle for fun too - https://bit.ly/computerphile-amp (episode sponsor) https://www.facebook.com/computerphile https://twitter.com/computer_phile This video was filmed and edited by Sean Riley. Computer Science at the University of Nottingham: https://bit.ly/nottscomputer Computerphile is a sister project to Brady Haran's Numberphile. More at https://www.bradyharanblog.com Thank you to Jane Street for their support of this channel. Learn more: https://www.janestreet.com

Matt Godbolt continues the story of the CPU and explains how machines do addition https://www.facebook.com/computerphile https://twitter.com/computer_phile This video was filmed and edited by Sean Riley. Computer Science at the University of Nottingham: https://bit.ly/nottscomputer Computerphile is a sister project to Brady Haran's Numberphile. More at https://www.bradyharanblog.com Thank you to Jane Street for their support of this channel. Learn more: https://www.janestreet.com

Progress bars, what are they and how do they work? Dr Valerio Giuffrida explains and goes through an implementation of a progress bar. https://www.facebook.com/computerphile https://twitter.com/computer_phile This video was filmed and edited by Sean Riley. Computer Science at the University of Nottingham: https://bit.ly/nottscomputer Computerphile is a sister project to Brady Haran's Numberphile. More at https://www.bradyharanblog.com Thank you to Jane Street for their support of this channel. Learn more: https://www.janestreet.com

Continuing the exploration of Regular Expressions and Automata with Professor Thorsten Altenkirch. The professor's code: https://bit.ly/C_PythonRegEx https://www.facebook.com/computerphile https://twitter.com/computer_phile This video was filmed and edited by Sean Riley. Computer Science at the University of Nottingham: https://bit.ly/nottscomputer Computerphile is a sister project to Brady Haran's Numberphile. More at https://www.bradyharanblog.com Thank you to Jane Street for their support of this channel. Learn more: https://www.janestreet.com

Explaining machine code from the ground up! Famous for 'Compiler Explorer,' Matt Godbolt's code has appeared before on Computerphile but this is his debut. EXTRA BITS: https://youtu.be/9gXeS8BoLmE Find out more about Matt from his blog: https://bit.ly/C_MGodbolt https://www.facebook.com/computerphile https://twitter.com/computer_phile This video was filmed and edited by Sean Riley. Computer Science at the University of Nottingham: https://bit.ly/nottscomputer Computerphile is a sister project to Brady Haran's Numberphile. More at https://www.bradyharanblog.com Thank you to Jane Street for their support of this channel. Learn more: https://www.janestreet.com

All through 2023 we've been asking Computerphile contributors to tell us about their first brush with computer games. This is the 2023 sound-check compilation! Links etc: https://docs.google.com/document/d/17VH5BuYun5ApNGmkChMnm4ppkQrw8pLHsu1roODAC24/edit?usp=drivesdk Playable: Horace & the Spiders: Horace & the Spiders (torinak.com) Horace goes Skiing: Horace Goes Skiing (torinak.com) Painter: Complete BBC Micro Games Archive - Play The Hobbit: VICE: C64, press "F12" for the menu. (archive.org) 3D Monster Maze Play online: 3D Monster Maze (zx81stuff.org.uk) Tetris (tetris.com): Play Tetris | Free Online Game | Tetris Blockout (3D version of tetris) DOSBox SVN, CPU speed: 3000 cycles, Frameskip 0, Program: BL (retrogames.cz) Manic Miner: Manic Miner (DOS) - online game | RetroGames.cz Chuckie Egg: DOSBox SVN, CPU speed: 3000 cycles, Frameskip 0, Program: CHEGA (retrogames.cz) Sonic The Hedgehog: Play SEGA Master System Sonic The Hedgehog (USA, Europe) Online in your browser - RetroGames.cc AtticAttack: Atic Atac (torinak.com) Doom: Doom (DOS) - online game | RetroGames.cz Doom II: DOSBox SVN, CPU speed: max 100% cycles, Frameskip 0, Program: DOOM2 (retrogames.cz) Atari Combat: Combat - Atari 2600 video games, free online game play in your browser. (free80sarcade.com) Ghosts and Goblins: VICE: C64, press "F12" for the menu. (archive.org) Mariokart - snes Super Mario Kart - Play Game Online (arcadespot.com) Bounty Bob Strikes Back Complete BBC Micro Games Archive - Play Daley Thompson’s Decathlon Decathlon (torinak.com) Videos: Pilot Wings on SNES (YouTube via NintendoComplete) Pilotwings (SNES) Playthrough - NintendoComplete - YouTube Guldcorn on Amiga (Freeware Advertising Game from Denmark) (YouTube via Abandonware) https://www.youtube.com/watch?v=c9pFxLdqN4Q Zelda on SNES (YT World of Longplays) https://youtu.be/Z6hjG6MCcZ8?si=MqOW-obBr4kT02tj Super Mario Bros. Deluxe on Game Boy Color (YouTube via NintendoComplete) Super Mario Bros. Deluxe (Game Boy Color) Playthrough - NintendoComplete (youtube.com) Prince of Persia 3D (1999) - PC (YouTube via Firstplays HD) Prince of Persia 3D (1999) - PC Gameplay 4k 2160p / Win 10 (youtube.com) Pokémon Yellow for Game Boy ᴴᴰ (YouTube via Nintendo Utopia) Pokémon Yellow for Game Boy ᴴᴰ Full Playthrough - YouTube Age of Empires II (YouTube via SergiuHellDragoonHQ) Age of Empires 2 Definitive Edition - Gameplay (PC/UHD) (youtube.com) River Raid (YouTube via RZX Archive) River Raid Walkthrough, ZX Spectrum (youtube.com) Flight Simulator (YouTube via Smooth Touchdown) ZX Spectrum Flight Simulation 48K Game - YouTube SimCity (YouTube via LGR) SimCity 30 Years Later: A Retrospective (youtube.com) SimCity2000 (YouTube via LGR) SimCity 2000 30 Years Later: An LGR Retrospective (youtube.com) https://www.facebook.com/computerphile https://twitter.com/computer_phile This video was filmed and edited by Sean Riley. Computer Science at the University of Nottingham: https://bit.ly/nottscomputer Computerphile is a sister project to Brady Haran's Numberphile. More at https://www.bradyharanblog.com Thank you to Jane Street for their support of this channel. Learn more: https://www.janestreet.com

Neural Radiance Field - NeRF - Dr Mike Pound and PhD Student Lewis Stuart demonstrate how a series of photos or a piece of video can lead to a 3D model in your computer. https://www.facebook.com/computerphile https://twitter.com/computer_phile This video was filmed and edited by Sean Riley. Computer Science at the University of Nottingham: https://bit.ly/nottscomputer Computerphile is a sister project to Brady Haran's Numberphile. More at https://www.bradyharanblog.com Thank you to Jane Street for their support of this channel. Learn more: https://www.janestreet.com

Ahead of an upcoming Python implementation, Professor Thorsten Altenkirch goes through the details and definitions of Regular Expressions. https://www.facebook.com/computerphile https://twitter.com/computer_phile This video was filmed and edited by Sean Riley. Computer Science at the University of Nottingham: https://bit.ly/nottscomputer Computerphile is a sister project to Brady Haran's Numberphile. More at https://www.bradyharanblog.com Thank you to Jane Street for their support of this channel. Learn more: https://www.janestreet.com

You can optimise for speed, power consumption or memory use & tiny changes can have a negligible or huge impact, but what should you optimise and most importantly, when? Dr Steve Bagley has an example! https://www.facebook.com/computerphile https://twitter.com/computer_phile This video was filmed and edited by Sean Riley. Computer Science at the University of Nottingham: https://bit.ly/nottscomputer Computerphile is a sister project to Brady Haran's Numberphile. More at https://www.bradyharanblog.com Thank you to Jane Street for their support of this channel. Learn more: https://www.janestreet.com

Mike talks through a binary search bug that was undiscovered for years! https://www.facebook.com/computerphile https://twitter.com/computer_phile This video was filmed and edited by Sean Riley. Computer Science at the University of Nottingham: https://bit.ly/nottscomputer Computerphile is a sister project to Brady Haran's Numberphile. More at https://www.bradyharanblog.com Thank you to Jane Street for their support of this channel. Learn more: https://www.janestreet.com

Legendary cyber-security expert Professor Gene Spafford joins us to try to define what cyber-security even is! "Spaf" as he's known, is a faculty member at Purdue University and now Honorary Professor at the University of Nottingham. Dr Spafford is a Fellow of the American Academy of Arts and Sciences, the Association for the Advancement of Science, the ACM, the IEEE, and the (ISC)2; a Distinguished Fellow of the ISSA; and a member of the Cyber Security Hall of Fame, the only person to ever hold all these distinctions. The book "Cybersecurity, Myths and Misconceptions" can be found here: https://bit.ly/C_CyberMythsBook https://www.facebook.com/computerphile https://twitter.com/computer_phile This video was filmed and edited by Sean Riley. Computer Science at the University of Nottingham: https://bit.ly/nottscomputer Computerphile is a sister project to Brady Haran's Numberphile. More at https://www.bradyharanblog.com Thank you to Jane Street for their support of this channel. Learn more: https://www.janestreet.com

Programs aren't capable of generating true random numbers, so how can we? Are they even useful? Dr Valerio Giuffrida demonstrates how to get a true random number from most computers. https://www.facebook.com/computerphile https://twitter.com/computer_phile This video was filmed and edited by Sean Riley. Computer Science at the University of Nottingham: https://bit.ly/nottscomputer Computerphile is a sister project to Brady Haran's Numberphile. More at https://www.bradyharanblog.com Thank you to Jane Street for their support of this channel. Learn more: https://www.janestreet.com

Back to basics as Dr Mike Pound explains a simple but incredibly useful algorithm, binary search. #algorithm #ComputerScience https://www.facebook.com/computerphile https://twitter.com/computer_phile This video was filmed and edited by Sean Riley. Computer Science at the University of Nottingham: https://bit.ly/nottscomputer Computerphile is a sister project to Brady Haran's Numberphile. More at https://www.bradyharanblog.com Thank you to Jane Street for their support of this channel. Learn more: https://www.janestreet.com

Share part of a secret without knowing which part? Dr Tim Muller explains how Oblivious Transfer works. https://www.facebook.com/computerphile https://twitter.com/computer_phile This video was filmed and edited by Sean Riley. Computer Science at the University of Nottingham: https://bit.ly/nottscomputer Computerphile is a sister project to Brady Haran's Numberphile. More at https://www.bradyharanblog.com Thank you to Jane Street for their support of this channel. Learn more: https://www.janestreet.com

Can you replicate millions of dollars of tech with a webcam and an arduino? Not really, but you can get pretty close! Dr Alex Turner took to the motorways of Britain to prove a point! A few extra bits from our conversation: https://youtu.be/wEuaMEQs4Sw Alex's Code: https://apt503.github.io/ https://www.facebook.com/computerphile https://twitter.com/computer_phile This video was filmed and edited by Sean Riley. Computer Science at the University of Nottingham: https://bit.ly/nottscomputer Computerphile is a sister project to Brady Haran's Numberphile. More at http://www.bradyharan.com Thank you to Jane Street for their support of this channel. Learn more: https://www.janestreet.com

At the heart of Bzip2 is the Burrows Wheeler Transform. Dr Steve Bagley (and a live studio audience) explains how & why it works. #compression #ComputerScience https://www.facebook.com/computerphile https://twitter.com/computer_phile This video was filmed and edited by Sean Riley. Computer Science at the University of Nottingham: https://bit.ly/nottscomputer Computerphile is a sister project to Brady Haran's Numberphile. More at http://www.bradyharan.com

Outlining the basics of compression methods, including some of the pitfalls! Dr Steve Bagley demonstrates. https://www.facebook.com/computerphile https://twitter.com/computer_phile This video was filmed and edited by Sean Riley. Computer Science at the University of Nottingham: https://bit.ly/nottscomputer Computerphile is a sister project to Brady Haran's Numberphile. More at http://www.bradyharan.com

The 'secure' TETRA communications system has been used by police and security services for decades, it's been revealed that it's seriously flawed. Dr Tim Muller explains. #tetraburst #security #securitybreach The team that reverse engineered TETRA and discovered the problems: https://tetraburst.com/ https://www.facebook.com/computerphile https://twitter.com/computer_phile This video was filmed and edited by Sean Riley. Computer Science at the University of Nottingham: https://bit.ly/nottscomputer Computerphile is a sister project to Brady Haran's Numberphile. More at http://www.bradyharan.com

The tongue-in-cheek title refers to the fact that eBPF can be a shortcut to programming inside the kernel. Dr Richard G Clegg of Queen Mary University London explains how this networking tool has morphed into more. Richard's notes: The Github link: https://github.com/richardclegg/ebpf_testing/ A tutorial if you want to find more: https://play.instruqt.com/embed/isovalent/tracks/ebpf-getting-started?token=em_9nxLzhlV41gb3rKM&show_challenges=true This is written by an expert but a bit dated now: https://www.brendangregg.com/blog/2019-01-01/learn-ebpf-tracing.html libbpf is useful: https://github.com/libbpf/libbpf I used code from here by Brendan Gregg in my example: https://github.com/iovisor/bcc https://www.facebook.com/computerphile https://twitter.com/computer_phile This video was filmed and edited by Sean Riley. Computer Science at the University of Nottingham: https://bit.ly/nottscomputer Computerphile is a sister project to Brady Haran's Numberphile. More at http://www.bradyharan.com

Computing with counters. How "counter machines" are as powerful as turing machines, albeit slightly more convoluted! Dr Christopher Hampson, Senior Lecturer in Computer Science Education at KCL explains. EXTRA BITS: https://youtu.be/ydmV-mWjftc https://www.facebook.com/computerphile https://twitter.com/computer_phile This video was filmed and edited by Sean Riley. Computer Science at the University of Nottingham: https://bit.ly/nottscomputer Computerphile is a sister project to Brady Haran's Numberphile. More at http://www.bradyharan.com

There's a lot of talk of image and text AI with large language models and image generators generating media (in both senses of the word) - but what about graphs? Dr David Kohan Marzagao specialises in Machine Learning for Graph-Structured Data and takes us through some simple examples. https://www.facebook.com/computerphile https://twitter.com/computer_phile This video was filmed and edited by Sean Riley. Computer Science at the University of Nottingham: https://bit.ly/nottscomputer Computerphile is a sister project to Brady Haran's Numberphile. More at http://www.bradyharan.com

How do we measure harm to improve the performance of Ai in the real world? Dr Hana Chockler is a Reader in Computer Science at King’s College London. EXTRA BITS: https://youtu.be/ThGSvYXnMK0 https://www.facebook.com/computerphile https://twitter.com/computer_phile This video was filmed and edited by Sean Riley. Computer Science at the University of Nottingham: https://bit.ly/nottscomputer Computerphile is a sister project to Brady Haran's Numberphile. More at http://www.bradyharan.com

Coping with code to constantly count configurations of cubes can cause considerable consternation. Can Computerphile contributor Mike’s concoction continue calculating complete cube configurations or culminate in catastrophe? Mike's Github link: https://github.com/mikepound/cubes/ Repository that did this first a few years ago 😊 https://github.com/noelle-crawfish/Enumerating-Polycubes Wikipedia article: https://en.wikipedia.org/wiki/Polycube The page that enumerated up to n=16 Polyominoes Enumeration (kevingong.com) http://kevingong.com/Polyominoes/Enumeration.html https://www.facebook.com/computerphile https://twitter.com/computer_phile This video was filmed and edited by Sean Riley. Computer Science at the University of Nottingham: https://bit.ly/nottscomputer Computerphile is a sister project to Brady Haran's Numberphile. More at http://www.bradyharan.com

What's actually possible vs what's theoretically possible vs what's actually useful with quantum computing? Victor V. Albert of University of Maryland and NIST simplifies! Victor on Twitter: @victorvalbert Entire Quantum playlist: https://www.youtube.com/playlist?list=PLzH6n4zXucko55y-YFE4ng1CLiui_3DUr https://www.facebook.com/computerphile https://twitter.com/computer_phile This video was filmed and edited by Sean Riley. Computer Science at the University of Nottingham: https://bit.ly/nottscomputer Computerphile is a sister project to Brady Haran's Numberphile. More at http://www.bradyharan.com

Extracting a secret key by simply watching the flickering of an LED? Sounds implausible but that's what we're discussing with Dr Mike Pound! Author’s page on the attack: Video-Based Cryptanalysis (nassiben.com) Paper: https://bit.ly/C_PowerLED https://www.facebook.com/computerphile https://twitter.com/computer_phile This video was filmed and edited by Sean Riley. Computer Science at the University of Nottingham: https://bit.ly/nottscomputer Computerphile is a sister project to Brady Haran's Numberphile. More at http://www.bradyharan.com

Continuing our look at the world of quantum, we're looking at the application of quantum technologies, from quantum cryptography to quantum computing. Victor V. Albert is a Theoretical physicist at University of Maryland and NIST. Victor V. Albert: @victorvalbert on Twitter https://www.facebook.com/computerphile https://twitter.com/computer_phile This video was filmed and edited by Sean Riley. Computer Science at the University of Nottingham: https://bit.ly/nottscomputer Computerphile is a sister project to Brady Haran's Numberphile. More at http://www.bradyharan.com

The four underlying principles of Quantum. Part one of a series on Quantum Computing, Victor V. Albert is a Theoretical physicist at University of Maryland and NIST. Victor V. Albert: @victorvalbert on Twitter https://www.facebook.com/computerphile https://twitter.com/computer_phile This video was filmed and edited by Sean Riley. Computer Science at the University of Nottingham: https://bit.ly/nottscomputer Computerphile is a sister project to Brady Haran's Numberphile. More at http://www.bradyharan.com

"Ethernet" was named because the inventor believed that the standard could transcend different types of media & 50 yrs on, we still use it! Dr Steve Bagley explains and demos the idea https://www.facebook.com/computerphile https://twitter.com/computer_phile This video was filmed and edited by Sean Riley. Computer Science at the University of Nottingham: https://bit.ly/nottscomputer Computerphile is a sister project to Brady Haran's Numberphile. More at http://www.bradyharan.com

Non deterministic finite state automata described and then shown in Python by Professor Thorsten Altenkirch #nfa #code #python #Thorsten #automata https://www.facebook.com/computerphile https://twitter.com/computer_phile This video was filmed and edited by Sean Riley. Computer Science at the University of Nottingham: https://bit.ly/nottscomputer Computerphile is a sister project to Brady Haran's Numberphile. More at http://www.bradyharan.com

Professor Brailsford helped Adobe with PDF. His group helped move publishing forwards by publishing a journal about publishing using the actual processes the journal described! https://www.facebook.com/computerphile https://twitter.com/computer_phile This video was filmed and edited by Sean Riley. Computer Science at the University of Nottingham: https://bit.ly/nottscomputer Computerphile is a sister project to Brady Haran's Numberphile. More at http://www.bradyharan.com

An oldie but a goodie, Dr Mike Pound revisits the Log-Jam attack. Original Log Jam paper: https://bit.ly/C_LogJamPaper Thanks to David Domminney Fowler for his help with the woeful framerate of the second camera footage. https://www.facebook.com/computerphile https://twitter.com/computer_phile This video was filmed and edited by Sean Riley. Computer Science at the University of Nottingham: https://bit.ly/nottscomputer Computerphile is a sister project to Brady Haran's Numberphile. More at http://www.bradyharan.com

Following a look at 'Sensemaking' Associate Professor Dr Kai Xu delves into some more tricks of the visualisation trade. https://www.facebook.com/computerphile https://twitter.com/computer_phile This video was filmed and edited by Sean Riley. Computer Science at the University of Nottingham: https://bit.ly/nottscomputer Computerphile is a sister project to Brady Haran's Numberphile. More at http://www.bradyharan.com

Researchers stumbled upon a simple but worrying bug. Cropped images from Pixel phones contained a great deal of the original image in the cropped file. Drs Steve Bagley & Mike Pound explain. Mike's sources: https://twitter.com/itssimontime https://twitter.com/david3141593 https://www.da.vidbuchanan.co.uk/blog/exploiting-acropalypse.html Proof of concept: https://acropalypse.app/ Waiting for someone to spot that I fixed my typo on the text messages illustration but didn't fix it on the original -Sean https://www.facebook.com/computerphile https://twitter.com/computer_phile This video was filmed and edited by Sean Riley. Computer Science at the University of Nottingham: https://bit.ly/nottscomputer Computerphile is a sister project to Brady Haran's Numberphile. More at http://www.bradyharan.com

AI moves quickly, this conversation was recorded March 3rd 2023. Microsoft have incorporated a large language model into the Bing search engine. Rob Miles discusses how it's been going. https://www.facebook.com/computerphile https://twitter.com/computer_phile This video was filmed and edited by Sean Riley. Computer Science at the University of Nottingham: https://bit.ly/nottscomputer Computerphile is a sister project to Brady Haran's Numberphile. More at http://www.bradyharan.com

Taking the theory of Deterministic Finite Automata and plugging it into Python with Professor Thorsten Altenkirch of the University of Nottingham. Longer version of this video with more examples: https://youtu.be/oHVHkkah3MY https://www.facebook.com/computerphile https://twitter.com/computer_phile This video was filmed and edited by Sean Riley. Computer Science at the University of Nottingham: https://bit.ly/nottscomputer Computerphile is a sister project to Brady Haran's Numberphile. More at http://www.bradyharan.com

Language Models' Achilles heel: Rob Miles talks about "glitch" tokens, those mysterious words which, which result in gibberish when entered into some large language models. More from Rob Miles: http://bit.ly/Rob_Miles_YouTube https://www.facebook.com/computerphile https://twitter.com/computer_phile This video was filmed and edited by Sean Riley. Computer Science at the University of Nottingham: https://bit.ly/nottscomputer Computerphile is a sister project to Brady Haran's Numberphile. More at http://www.bradyharan.com

Turning data into something visual helps humans make sense of things. Kai explains and shows an open source tool for tracking your research This video was a reupload due to some audio glitches on the original copy. https://www.facebook.com/computerphile https://twitter.com/computer_phile This video was filmed and edited by Sean Riley. Computer Science at the University of Nottingham: https://bit.ly/nottscomputer Computerphile is a sister project to Brady Haran's Numberphile. More at http://www.bradyharan.com

Rust has memory management built in. Ian Knight takes us through some of its features. Garbage Collection video: https://youtu.be/c32zXYAK7CI https://www.facebook.com/computerphile https://twitter.com/computer_phile This video was filmed and edited by Sean Riley. Computer Science at the University of Nottingham: https://bit.ly/nottscomputer Computerphile is a sister project to Brady Haran's Numberphile. More at http://www.bradyharan.com

Mike explains a paper from the University of Maryland, proposing a neat trick to 'watermark' the output of large language models such as ChatGPT. Dr Mike Pound is an image analyst at the University of Nottingham. The University of Maryland paper: https://arxiv.org/pdf/2301.10226.pdf https://www.facebook.com/computerphile https://twitter.com/computer_phile This video was filmed and edited by Sean Riley. Computer Science at the University of Nottingham: https://bit.ly/nottscomputer Computerphile is a sister project to Brady Haran's Numberphile. More at http://www.bradyharan.com

Discussing the challenges of dealing with code from the COBOL era that's still needed! - Dr Kevin Lano Reader in Software Engineering at Kings College London. https://www.facebook.com/computerphile https://twitter.com/computer_phile This video was filmed and edited by Sean Riley. Computer Science at the University of Nottingham: https://bit.ly/nottscomputer Computerphile is a sister project to Brady Haran's Numberphile. More at http://www.bradyharan.com

A massive topic deserves a massive video. Rob Miles discusses ChatGPT and how it may not be dangerous, yet. More from Rob Miles: http://bit.ly/Rob_Miles_YouTube The 'Danish' Reddit post: https://www.reddit.com/r/GPT3/comments/zb4msc/speaking_to_chatgpt_in_perfect_danish_while_it/ Some of Rob's own videos which are relevant: Reward Modelling: https://www.youtube.com/watch?v=PYylPRX6z4Q Instrumental Convergence: https://www.youtube.com/watch?v=ZeecOKBus3Q Problems with Language Models: https://www.youtube.com/watch?v=w65p_IIp6JY https://www.facebook.com/computerphile https://twitter.com/computer_phile This video was filmed and edited by Sean Riley. Computer Science at the University of Nottingham: https://bit.ly/nottscomputer Computerphile is a sister project to Brady Haran's Numberphile. More at http://www.bradyharan.com

How does memory management work? In C you had to manage things yourself, but modern languages take care of a lot of it for you - Laurence Tratt of Kings College London explains. https://www.facebook.com/computerphile https://twitter.com/computer_phile This video was filmed and edited by Sean Riley. Computer Science at the University of Nottingham: https://bit.ly/nottscomputer Computerphile is a sister project to Brady Haran's Numberphile. More at http://www.bradyharan.com

Emulation sounds difficult, begins to look simple and then ends up being difficult after all! Dr Steve Bagley explains. https://www.facebook.com/computerphile https://twitter.com/computer_phile This video was filmed and edited by Sean Riley. Computer Science at the University of Nottingham: https://bit.ly/nottscomputer Computerphile is a sister project to Brady Haran's Numberphile. More at http://www.bradyharan.com

Do anti virus programs use machine learning? Dr Fabio Pierazzi looks at the trends and challenges. Fabio's website: https://fabio.pierazzi.com Main paper: Arp et al., “Dos and Don’ts of Machine Learning for Computer Security”, USENIX Security 2022 – Distinguished Paper Award – Project website: https://dodo-mlsec.org/ https://www.facebook.com/computerphile https://twitter.com/computer_phile This video was filmed and edited by Sean Riley. Computer Science at the University of Nottingham: https://bit.ly/nottscomputer Computerphile is a sister project to Brady Haran's Numberphile. More at http://www.bradyharan.com

Throughout 2022 we asked the sound-check question "what's your favourite book?" Answers: Structured Computer Organization Andrew S. Tanenbaum UNIX: A History and a Memoir Brian W Kernighan The Mythical Man-Month: Essays on Software Engineering Fred Brooks Understanding Cryptography: A Textbook for Students and Practitioners Christof Paar , Jan Pelzl , et al. Pride and Prejudice Jane Austen Bad Blood John Carreyrou Empire of Pain Patrick Radden Keefe A Spy Among Friends: Philby and the Great Betrayal Ben Macintyre The Glass Bead Game Hermann Hesse Spytime: The Undoing of James Jesus Angleton William F. Buckley Jr. House of Sleep Jonathan Coe The First Fifteen Lives of Harry August Claire North The History of the Peloponnesian War Thucydides Gödel, Escher, Bach: An Eternal Golden Braid Douglas Hofstadter Alice in Wonderland Lewis Carroll Effective Modern C++: 42 Specific Ways to Improve Your Use of C++11 and C++14 Scott Meyers All Systems Red (Kindle Single): The Murderbot Diaries Martha Wells Hyperion (Hyperion Cantos Book 1) Dan Simmons https://www.facebook.com/computerphile https://twitter.com/computer_phile This video was filmed and edited by Sean Riley. Computer Science at the University of Nottingham: https://bit.ly/nottscomputer Computerphile is a sister project to Brady Haran's Numberphile. More at http://www.bradyharan.com

How does Model Driven Engineering work? Dr Steffen Zschaler, Reader in Computer Science at Kings College London takes us through it. https://www.facebook.com/computerphile https://twitter.com/computer_phile This video was filmed and edited by Sean Riley. Computer Science at the University of Nottingham: https://bit.ly/nottscomputer Computerphile is a sister project to Brady Haran's Numberphile. More at http://www.bradyharan.com

http3 is here, but it wasn't an easy solution, Richard G Clegg of Queen Mary University London explains why he can't decide whether he loves it or hates it! https://www.facebook.com/computerphile https://twitter.com/computer_phile This video was filmed and edited by Sean Riley. Computer Science at the University of Nottingham: https://bit.ly/nottscomputer Computerphile is a sister project to Brady Haran's Numberphile. More at http://www.bradyharan.com

How to we check to see if a black box system is giving us the right result for the right reason? Even a broken clock is correct twice a day! - Dr Hana Chockler is Reader in the Department of Informatics, King's College London and Principal Scientist at causaLens Relevant papers: https://bit.ly/C_Hana_Paper1 https://bit.ly/C_Hana_paper2 https://www.facebook.com/computerphile https://twitter.com/computer_phile This video was filmed and edited by Sean Riley. Computer Science at the University of Nottingham: https://bit.ly/nottscomputer Computerphile is a sister project to Brady Haran's Numberphile. More at http://www.bradyharan.com

A look at why (under certain circumstances) JIT Compilers can be so much faster. Dr Laurence Tratt of KCL takes us through the details. More about Laurie: https://bit.ly/C_LaurenceTratt https://www.facebook.com/computerphile https://twitter.com/computer_phile This video was filmed and edited by Sean Riley. Computer Science at the University of Nottingham: https://bit.ly/nottscomputer Computerphile is a sister project to Brady Haran's Numberphile. More at http://www.bradyharan.com

How do you make a legged robot robust when the environment is against it? Ioannis Havoutis of Oxford Robotics Institute walks us through it. https://www.facebook.com/computerphile https://twitter.com/computer_phile This video was filmed and edited by Sean Riley. Computer Science at the University of Nottingham: https://bit.ly/nottscomputer Computerphile is a sister project to Brady Haran's Numberphile. More at http://www.bradyharan.com

Information theory shows entropy works a little differently with encryption. Dr Tim Muller takes us through an example https://www.facebook.com/computerphile https://twitter.com/computer_phile This video was filmed and edited by Sean Riley. Computer Science at the University of Nottingham: https://bit.ly/nottscomputer Computerphile is a sister project to Brady Haran's Numberphile. More at http://www.bradyharan.com

Just how do computers synchronise clocks across the Internet? Dr Julian Onions implemented this at Nottingham after meeting the godfather of Internet time, Dave Mills! https://www.facebook.com/computerphile https://twitter.com/computer_phile This video was filmed and edited by Sean Riley. Computer Science at the University of Nottingham: https://bit.ly/nottscomputer Computerphile is a sister project to Brady Haran's Numberphile. More at http://www.bradyharan.com

Deterministic route finding isn't enough for the real world - Nick Hawes of the Oxford Robotics Institute takes us through some problems featuring probabilities. Nick used an example from Mickael Randour: https://bit.ly/C_MickaelRandour https://www.facebook.com/computerphile https://twitter.com/computer_phile This video was filmed and edited by Sean Riley. Computer Science at the University of Nottingham: https://bit.ly/nottscomputer Computerphile is a sister project to Brady Haran's Numberphile. More at http://www.bradyharan.com

Mike Continues his look at AI Image Generation with Stable Diffusion Mike's code: https://colab.research.google.com/drive/1roZqqhsdpCXZr8kgV_Bx_ABVBPgea3lX?usp=sharing Jonathan: https://twitter.com/johnowhitaker/status/1565710033463156739?t=3v6UITS6c12GayiZ1gKVww&s=19 https://www.facebook.com/computerphile https://twitter.com/computer_phile This video was filmed and edited by Sean Riley. Computer Science at the University of Nottingham: https://bit.ly/nottscomputer Computerphile is a sister project to Brady Haran's Numberphile. More at http://www.bradyharan.com

Looking at some real world uses of information theory with Dr Tim Muller https://www.facebook.com/computerphile https://twitter.com/computer_phile This video was filmed and edited by Sean Riley. Computer Science at the University of Nottingham: https://bit.ly/nottscomputer Computerphile is a sister project to Brady Haran's Numberphile. More at http://www.bradyharan.com

AI image generators are massive, but how are they creating such interesting images? Dr Mike Pound explains what's going on. Thumbnail image partly created by DALL-E with the prompt: "Computerphile YouTube Video presenter Mike Pound Explains Diffusion AI methods thumbnail with green computer style title text on a black background with grey binary" https://www.facebook.com/computerphile https://twitter.com/computer_phile This video was filmed and edited by Sean Riley. Computer Science at the University of Nottingham: https://bit.ly/nottscomputer Computerphile is a sister project to Brady Haran's Numberphile. More at http://www.bradyharan.com

Visit https://bit.ly/Scaler_Computerphile to take the free live class Could having more bespoke programming languages speed up software development? Dr Steffen Zschaler, Reader in Computer Science at KCL thinks so. #scaler #createimpact #collaboration #ad https://www.facebook.com/computerphile https://twitter.com/computer_phile This video was filmed and edited by Sean Riley. Computer Science at the University of Nottingham: https://bit.ly/nottscomputer Computerphile is a sister project to Brady Haran's Numberphile. More at http://www.bradyharan.com

Blockchain has a controversial reputation, linked as it is to cryptocurrency but Professor Peter McBurney of Kings College London thinks it's an important an invention as the web itself. This video was initially titled "Blockchain Benefits" to reflect Prof McBurney's talk https://www.facebook.com/computerphile https://twitter.com/computer_phile This video was filmed and edited by Sean Riley. Computer Science at the University of Nottingham: https://bit.ly/nottscomputer Computerphile is a sister project to Brady Haran's Numberphile. More at http://www.bradyharan.com

Knowledge graphs help computers make sense of data for search, recommendations and other AI tasks, Professor Elena Simperl of Kings College London explains. https://www.facebook.com/computerphile https://twitter.com/computer_phile This video was filmed and edited by Sean Riley. Computer Science at the University of Nottingham: https://bit.ly/nottscomputer Computerphile is a sister project to Brady Haran's Numberphile. More at http://www.bradyharan.com

Thanks to Jane Street for their support... Check out internships here: https://bit.ly/computerphile-janestreet More links & stuff in full description below ↓↓↓ This video features the Oxford Robotics Institute demonstrating their SLAM algorithm with their frontier device and the Boston Dynamics Spot robot. Thanks to Marco Camurri & Michal Staniaszek for their time. Last time we met spot: https://www.youtube.com/watch?v=cQhsblLVjEo Joining Point Clouds with Iterative Closest Point: https://www.youtube.com/watch?v=4uWSo8v3iQA JANE STREET... Applications for Summer 2023 internships are open and filling up... Roles include: Quantitative Trading, Software Engineering, Quantitative Research and Business Development... and more. Positions in New York, Hong Kong, and London. https://bit.ly/computerphile-janestreet https://www.facebook.com/computerphile https://twitter.com/computer_phile This video was filmed and edited by Sean Riley. Computer Science at the University of Nottingham: https://bit.ly/nottscomputer Computerphile is a sister project to Brady Haran's Numberphile. More at http://www.bradyharan.com

Welcoming back the legend that is Professor Brian Kernighan! Professor Brailsford invites Brian for coffee and a chat. https://www.facebook.com/computerphile https://twitter.com/computer_phile This video was filmed and edited by Sean Riley. Computer Science at the University of Nottingham: https://bit.ly/nottscomputer Computerphile is a sister project to Brady Haran's Numberphile. More at http://www.bradyharan.com

Could a computer program find Fermat's Lost Theorem? Professor Altenkirch shows us how to get started with lean. EXTRA BITS (A deeper dive into automated proofs) : https://youtu.be/PaKHRfSkhnA https://www.facebook.com/computerphile https://twitter.com/computer_phile This video was filmed and edited by Sean Riley. Computer Science at the University of Nottingham: https://bit.ly/nottscomputer Computerphile is a sister project to Brady Haran's Numberphile. More at http://www.bradyharan.com

We asked Brian Kernighan (author of 'C Programming Language') what language kids should try first. Coffee with Kernighan: Coming Soon https://www.facebook.com/computerphile https://twitter.com/computer_phile This video was filmed and edited by Sean Riley. Computer Science at the University of Nottingham: https://bit.ly/nottscomputer Computerphile is a sister project to Brady Haran's Numberphile. More at http://www.bradyharan.com

AI Object detection is getting better and better, but as Dr Alex Turner demonstrates, it's far from perfect, and it doesn't recognise things in the same way as us. https://www.facebook.com/computerphile https://twitter.com/computer_phile This video was filmed and edited by Sean Riley. Computer Science at the University of Nottingham: https://bit.ly/nottscomputer Computerphile is a sister project to Brady Haran's Numberphile. More at http://www.bradyharan.com

Even the most impressive soft robots have an external control system. What if the software could be running on soft hardware? - Associate Professor Perla Maiolino explains the soft logic in soft robots. ORI Soft Robots group: Perla Maiolino (speaker) Liang He Sihan Wang (Demonstrator) Francesco Grella Peizhi Zhang Oliver Shorthose ORI Soft Robots Group Website: https://bit.ly/C_Oxford-SoftRobots https://www.facebook.com/computerphile https://twitter.com/computer_phile This video was filmed and edited by Sean Riley. Computer Science at the University of Nottingham: https://bit.ly/nottscomputer Computerphile is a sister project to Brady Haran's Numberphile. More at http://www.bradyharan.com

Discussing the philosophical ideas behind AI Sentience, with Professor Mark Jago, Professor of Philosophy at University of Nottingham. Mark’s Philosophy and Logic channel is here: https://bit.ly/C_AtticPhilo Previous Computerphile Videos featuring Mark: https://youtu.be/macM_MtS_w4 https://youtu.be/dNRDvLACg5Q Mike Pound on LaMDA: https://youtu.be/iBouACLc-hw https://www.facebook.com/computerphile https://twitter.com/computer_phile This video was filmed and edited by Sean Riley. Computer Science at the University of Nottingham: https://bit.ly/nottscomputer Computerphile is a sister project to Brady Haran's Numberphile. More at http://www.bradyharan.com

You just have the binary - can you work out what it does & how? Dr Steve Bagley talks about how you might reverse engineer a piece of software. https://www.facebook.com/computerphile https://twitter.com/computer_phile This video was filmed and edited by Sean Riley. Computer Science at the University of Nottingham: https://bit.ly/nottscomputer Computerphile is a sister project to Brady Haran's Numberphile. More at http://www.bradyharan.com

A google researcher was put on leave because he apparently believed his AI project had become sentient. Dr Mike Pound discusses. https://www.facebook.com/computerphile https://twitter.com/computer_phile This video was filmed and edited by Sean Riley. Computer Science at the University of Nottingham: https://bit.ly/nottscomputer Computerphile is a sister project to Brady Haran's Numberphile. More at http://www.bradyharan.com

With the news Apple are implementing Virtual Memory on the iPad, Dr Steve Bagley takes us through what virtual memory is and how it works. Extra Bits: https://youtu.be/OJKnPCvAPIQ https://www.facebook.com/computerphile https://twitter.com/computer_phile This video was filmed and edited by Sean Riley. Computer Science at the University of Nottingham: https://bit.ly/nottscomputer Computerphile is a sister project to Brady Haran's Numberphile. More at http://www.bradyharan.com

Zip files & error correction depend on information theory, Tim Muller takes us through how Claude Shannon's early Computer Science work is still essential today! https://www.facebook.com/computerphile https://twitter.com/computer_phile This video was filmed and edited by Sean Riley. Computer Science at the University of Nottingham: https://bit.ly/nottscomputer Computerphile is a sister project to Brady Haran's Numberphile. More at http://www.bradyharan.com

If you pick the wrong prime numbers, cracking RSA becomes a cinch. Dr Mike Pound explains the findings of researcher Hanno Böck ARS Technica Article: https://bit.ly/C_BReakingRSa_Article Hanno's Blog: https://bit.ly/C_HannoRSA https://www.facebook.com/computerphile https://twitter.com/computer_phile This video was filmed and edited by Sean Riley. Computer Science at the University of Nottingham: https://bit.ly/nottscomputer Computerphile is a sister project to Brady Haran's Numberphile. More at http://www.bradyharan.com

Why do WiFI speeds vary so much? Dr Steve Bagley demonstrates how even a poor signal for one person can affect those with a seemingly perfect signal! https://www.facebook.com/computerphile https://twitter.com/computer_phile This video was filmed and edited by Sean Riley. Computer Science at the University of Nottingham: https://bit.ly/nottscomputer Computerphile is a sister project to Brady Haran's Numberphile. More at http://www.bradyharan.com

The psychic paper in the TV show "Doctor Who" displays whatever the Doctor needs it to show at any given time. The Java vulnerability Neil Madden exposed is a digital version of this. Dr Mike Pound explains https://www.facebook.com/computerphile https://twitter.com/computer_phile This video was filmed and edited by Sean Riley. Computer Science at the University of Nottingham: https://bit.ly/nottscomputer Computerphile is a sister project to Brady Haran's Numberphile. More at http://www.bradyharan.com

How do you compute a massive number raised to the power of another huge number, modulo something else? Dr Mike Pound explains the super-quick square & multiply algorithm. Numberphile's Witness Numbers video which inspired Mike: https://www.youtube.com/watch?v=_MscGSN5J6o https://www.facebook.com/computerphile https://twitter.com/computer_phile This video was filmed and edited by Sean Riley. Computer Science at the University of Nottingham: https://bit.ly/nottscomputer Computerphile is a sister project to Brady Haran's Numberphile. More at http://www.bradyharan.com

Could robots like this be sent into nuclear facilities to autonomously deal with toxic waste? That's the plan. Nick & Michal from Oxford Robotics Institute demonstrate & explain their automation of the familiar yellow robot 'spot.' The project was the result of a collaboration between the Oxford Robotics Institute (particularly the DRS and GOALS groups) and Createc (createc.co.uk), and was supported by UKRI through the ISCF RAIN and ORCA Hubs, the AutoInspect project, and the EPSRC Programme Grant in Embodied Intelligence. https://www.facebook.com/computerphile https://twitter.com/computer_phile This video was filmed and edited by Sean Riley. Computer Science at the University of Nottingham: https://bit.ly/nottscomputer Computerphile is a sister project to Brady Haran's Numberphile. More at http://www.bradyharan.com

Continuing on from the Professor's look at the Mythical Man Month, we're talking about whether IBM could have used high level languages in their groundbreaking 360 series. https://www.facebook.com/computerphile https://twitter.com/computer_phile This video was filmed and edited by Sean Riley. Computer Science at the University of Nottingham: https://bit.ly/nottscomputer Computerphile is a sister project to Brady Haran's Numberphile. More at http://www.bradyharan.com

Computer says no! What if two team members try to edit the same file in a project? Git has you covered - Dr Max Wilson explains how teams collaborate using Git. https://www.facebook.com/computerphile https://twitter.com/computer_phile This video was filmed and edited by Sean Riley. Computer Science at the University of Nottingham: https://bit.ly/nottscomputer Computerphile is a sister project to Brady Haran's Numberphile. More at http://www.bradyharan.com

Apple's latest M1 chip is two older chips bolted together, Dr. Steve Bagley explains how they made it work the same as a single chip. https://www.facebook.com/computerphile https://twitter.com/computer_phile This video was filmed and edited by Sean Riley. Computer Science at the University of Nottingham: https://bit.ly/nottscomputer Computerphile is a sister project to Brady Haran's Numberphile. More at http://www.bradyharan.com

Many will have heard the phrase 'Mythical Man Month' and assume it's simply about whether manpower and time are interchangeable - the book is really about much more. Professor Brailsford explains how this all relates to the humble byte. https://www.facebook.com/computerphile https://twitter.com/computer_phile This video was filmed and edited by Sean Riley. Computer Science at the University of Nottingham: https://bit.ly/nottscomputer Computerphile is a sister project to Brady Haran's Numberphile. More at http://www.bradyharan.com

Remembering a time when connections were down to 40 bits per second, and the resulting algorithms still in use today! Dr Richard G Clegg of Queen Mary University London has the details. Paper mentioned by Richard: https://bit.ly/C_CongestionCollapse V. Jacobson. Congestion avoidance and control. SIGCOMM Comput. Commun. Rev. 18, 4 (August 1988), 314–329. https://www.facebook.com/computerphile https://twitter.com/computer_phile This video was filmed and edited by Sean Riley. Computer Science at the University of Nottingham: https://bit.ly/nottscomputer Computerphile is a sister project to Brady Haran's Numberphile. More at http://www.bradyharan.com

Continuing our look at Git, Dr Max Wilson has a quick look at versions and branches. https://www.facebook.com/computerphile https://twitter.com/computer_phile This video was filmed and edited by Sean Riley. Computer Science at the University of Nottingham: https://bit.ly/nottscomputer Computerphile is a sister project to Brady Haran's Numberphile. More at http://www.bradyharan.com

Git doesn't actually perform magic, but it's pretty neat. Dr Max Wilson takes us through the various elements that make Git such a useful tool. https://www.facebook.com/computerphile https://twitter.com/computer_phile This video was filmed and edited by Sean Riley. Computer Science at the University of Nottingham: https://bit.ly/nottscomputer Computerphile is a sister project to Brady Haran's Numberphile. More at http://www.bradyharan.com

The Mixed Reality lab at the University of Nottingham has been studying virtual and augmented reality for decades. We chatted to Steve Benford, Paul Tennent & Edgard Bodiaj from the Mixed Reality Lab & Kate Wellham from Live Cinema about their system 'Bubbles' and how it fits with the current state of VR and the benefits over Zoom & Teams meetings. The VR environment shown in the video is not Meta/Facebook's 'Metaverse', it is a virtual environment created by the mixed reality lab at the University of Nottingham, used here to illustrate some of the benefits of VR over traditional online meetings. https://www.facebook.com/computerphile https://twitter.com/computer_phile This video was filmed and edited by Sean Riley. Computer Science at the University of Nottingham: https://bit.ly/nottscomputer Computerphile is a sister project to Brady Haran's Numberphile. More at http://www.bradyharan.com

One of the cleanest ways to cut down a search space when working out point proximity! Mike Pound explains K-Dimension Trees. EXTRA BITS: https://youtu.be/uP20LhbHFBo https://www.facebook.com/computerphile https://twitter.com/computer_phile This video was filmed and edited by Sean Riley. Computer Science at the University of Nottingham: https://bit.ly/nottscomputer Computerphile is a sister project to Brady Haran's Numberphile. More at http://www.bradyharan.com

There's a reason Needham–Schroeder isn't used any more - Tim Muller demonstrates the weakness in the technique. https://www.facebook.com/computerphile https://twitter.com/computer_phile This video was filmed and edited by Sean Riley. Computer Science at the University of Nottingham: https://bit.ly/nottscomputer Computerphile is a sister project to Brady Haran's Numberphile. More at http://www.bradyharan.com

One of the most useful tools in code development, Git protects your code from yourself and others! Dr Max Wilson gives us an overview. https://www.facebook.com/computerphile https://twitter.com/computer_phile This video was filmed and edited by Sean Riley. Computer Science at the University of Nottingham: https://bit.ly/nottscomputer Computerphile is a sister project to Brady Haran's Numberphile. More at http://www.bradyharan.com

The "most critical vulnerability of the last decade?" - Dr Bagley and Dr Pound explain why it's so pervasive, and even affected Mike's own code! https://www.facebook.com/computerphile https://twitter.com/computer_phile This video was filmed and edited by Sean Riley. Computer Science at the University of Nottingham: https://bit.ly/nottscomputer Computerphile is a sister project to Brady Haran's Numberphile. More at http://www.bradyharan.com

You've scanned a room or object and now you have lots of discrete scans you want to fit together. Dr Mike Pound explains how the Iterative Closest Point Algorithm is used. Stanford graphics resources: http://graphics.stanford.edu/data/3Dscanrep/ Mesh Lab: https://www.meshlab.net/ https://www.facebook.com/computerphile https://twitter.com/computer_phile This video was filmed and edited by Sean Riley. Computer Science at the University of Nottingham: https://bit.ly/nottscomputer Computerphile is a sister project to Brady Haran's Numberphile. More at http://www.bradyharan.com

The Spectrum kick started an entire generation of computer coders. Dr Steve Vickers was involved in developing software for both the ZX81 and Spectrum, he even wrote the manuals! EXTRA BITS - Dr Vickers on The Jupiter Ace : https://youtu.be/cbAOqHEWSWg https://www.facebook.com/computerphile https://twitter.com/computer_phile This video was filmed and edited by Sean Riley. Computer Science at the University of Nottingham: https://bit.ly/nottscomputer Computerphile is a sister project to Brady Haran's Numberphile. More at http://www.bradyharan.com

With the hype around Apple's M1 chip, Dr Steve Bagley discusses what the big deal is with the system on chip approach to building computers - spoiler, it's not a new thing! https://www.facebook.com/computerphile https://twitter.com/computer_phile This video was filmed and edited by Sean Riley. Computer Science at the University of Nottingham: https://bit.ly/nottscomputer Computerphile is a sister project to Brady Haran's Numberphile. More at http://www.bradyharan.com

Depth can be a useful addition to image data. Mike Pound shows off a realsense camera and explains how it can help with Deep Learning https://www.facebook.com/computerphile https://twitter.com/computer_phile This video was filmed and edited by Sean Riley. Computer Science at the University of Nottingham: https://bit.ly/nottscomputer Computerphile is a sister project to Brady Haran's Numberphile. More at http://www.bradyharan.com

Parting the veil of mystery on quantum superposition using waves. Professor Phil Moriarty takes us through it. Phil's blogpost on the subject: https://muircheartblog.wpcomstaging.com/2021/10/26/superposition-without-the-superstition/ https://www.facebook.com/computerphile https://twitter.com/computer_phile This video was filmed and edited by Sean Riley. Computer Science at the University of Nottingham: https://bit.ly/nottscomputer Computerphile is a sister project to Brady Haran's Numberphile. More at http://www.bradyharan.com

We've all got to the edge of the wifi coverage, but the idea of coverage produces a network problem, the Hidden Node Problem. Dr Steve Bagley explains. https://www.facebook.com/computerphile https://twitter.com/computer_phile This video was filmed and edited by Sean Riley. Computer Science at the University of Nottingham: https://bit.ly/nottscomputer Computerphile is a sister project to Brady Haran's Numberphile. More at http://www.bradyharan.com

If your job involves simulating the creation of the universe, you're going to need a big computer. Dr Julian Onions on the practicalities of saving your universe simulation when it's terabytes in size, and in a different country! https://www.facebook.com/computerphile https://twitter.com/computer_phile This video was filmed and edited by Sean Riley. Computer Science at the University of Nottingham: https://bit.ly/nottscomputer Computerphile is a sister project to Brady Haran's Numberphile. More at http://www.bradyharan.com

Just what was it that took Facebook, Instagram & WhatsApp offline on 4th October 2021? - Dr Steve Bagley investigates! https://www.facebook.com/computerphile https://twitter.com/computer_phile This video was filmed and edited by Sean Riley. Computer Science at the University of Nottingham: https://bit.ly/nottscomputer Computerphile is a sister project to Brady Haran's Numberphile. More at http://www.bradyharan.com

Sinclair Computers drove a computing revolution in the UK. At last you could purchase a computer for less than £100 (Approx. $230 in 1980) RIP Sir Clive Sinclair, the man behind the ZX80, ZX81 & ZX Spectrum (30 July 1940 – 16 September 2021) Thanks to The Centre for Computing History, Cambridge Thanks to the National Videogame Museum, Sheffield Additional thanks to Spencer Owen @zxspectROM for Sinclair help and to Hrvoje Cavrak for his Sir Clive graphic. Computerphile videos referenced: Video Game Legends: https://youtu.be/t-tO7vx1rw4 People's Computer: Sinclair ZX81: https://youtu.be/SFAWHB2BKOg Festive Flashing Lights: https://youtu.be/o2RFdQMi4mg Wobbly RAM & ZX81 Drawbacks: https://youtu.be/C9DB3w-Syfs Game Physics (in Assembler): https://youtu.be/Kalmryn9_sE Sinclair & the ZX Spectrum: https://youtu.be/YxnojyQSpCE Atari 2600 VCS Programming: https://youtu.be/fce39nQm9TY https://www.facebook.com/computerphile https://twitter.com/computer_phile This video was filmed and edited by Sean Riley. Computer Science at the University of Nottingham: https://bit.ly/nottscomputer Computerphile is a sister project to Brady Haran's Numberphile. More at http://www.bradyharan.com

The Bit Blit algorithm dates back to Xerox PARC, but was famously used to sell the Amiga home computer among others. Dr Steve Bagley takes us through how it works. This is a re-upload due to an audio problem on the earlier edit -Sean https://www.facebook.com/computerphile https://twitter.com/computer_phile This video was filmed and edited by Sean Riley. Computer Science at the University of Nottingham: https://bit.ly/nottscomputer Computerphile is a sister project to Brady Haran's Numberphile. More at http://www.bradyharan.com

A simple bit-shift operation can generate amazing random strings of numbers. Dr Mike Pound explains then codes it in Python. If you want to know more about how XOR works: https://www.youtube.com/watch?v=VPw9vPN-3ac https://www.facebook.com/computerphile https://twitter.com/computer_phile This video was filmed and edited by Sean Riley. Computer Science at the University of Nottingham: https://bit.ly/nottscomputer Computerphile is a sister project to Brady Haran's Numberphile. More at http://www.bradyharan.com

Continuing our look at the Agda programming language, Professor Thorsten Altenkirch shows us how you can work with proofs, which could be invaluable in some industrial situations. https://www.facebook.com/computerphile https://twitter.com/computer_phile This video was filmed and edited by Sean Riley. Computer Science at the University of Nottingham: https://bit.ly/nottscomputer Computerphile is a sister project to Brady Haran's Numberphile. More at http://www.bradyharan.com

Multiple ways to break through restrictions in a network* demonstrated by Dr Richard G Clegg of Queen Mary University London. *Please only try these methods on machines where you have permission. Richard has kindly prepared some notes: https://bit.ly/C_RichCleg_HackOut https://www.facebook.com/computerphile https://twitter.com/computer_phile This video was filmed and edited by Sean Riley. Computer Science at the University of Nottingham: https://bit.ly/nottscomputer Computerphile is a sister project to Brady Haran's Numberphile. More at http://www.bradyharan.com

A language designed to eliminate run-time errors? Professor Thorsten Altenkirch demonstrates programming Type Theory with Agda. https://www.facebook.com/computerphile https://twitter.com/computer_phile This video was filmed and edited by Sean Riley. Computer Science at the University of Nottingham: https://bit.ly/nottscomputer Computerphile is a sister project to Brady Haran's Numberphile. More at http://www.bradyharan.com

Big Data sounds like a buzz word, and is hard to quantify, but the problems with large data sets are very real. Dr Isaac Triguero explains some of the challenges. https://www.facebook.com/computerphile https://twitter.com/computer_phile This video was filmed and edited by Sean Riley. Computer Science at the University of Nottingham: https://bit.ly/nottscomputer Computerphile is a sister project to Brady Haran's Numberphile. More at http://www.bradyharan.com

When the World Wide Web was born, there was no World Wide Web, so it took a while before it was widely adopted. Professor Brailsford takes us through what he was up to in 1991. https://www.facebook.com/computerphile https://twitter.com/computer_phile This video was filmed and edited by Sean Riley. Computer Science at the University of Nottingham: https://bit.ly/nottscomputer Computerphile is a sister project to Brady Haran's Numberphile. More at http://www.bradyharan.com

Equality sounds a straightforward idea, but there are subtle problems in theoretical computer science. Professor Thorsten Altenkirch explains how his late friend Martin Hofmann solved one of the biggest problems. More of Thorsten on Type Theory: https://bit.ly/C_Thor_playlist Thorsten's paper dedicated to Martin: https://bit.ly/C_Thor_Paper https://www.facebook.com/computerphile https://twitter.com/computer_phile This video was filmed and edited by Sean Riley. Computer Science at the University of Nottingham: https://bit.ly/nottscomputer Computerphile is a sister project to Brady Haran's Numberphile. More at http://www.bradyharan.com

With new operating systems requiring security hardware, what is this hardware and why do we need it? Dr Steve Bagley takes Sean's bet to see how many times he can mention Trusted Platform Module in one video! https://www.facebook.com/computerphile https://twitter.com/computer_phile This video was filmed and edited by Sean Riley. Computer Science at the University of Nottingham: https://bit.ly/nottscomputer Computerphile is a sister project to Brady Haran's Numberphile. More at http://www.bradyharan.com

How does the "mystical" mind-reading computer program work? Spoiler, it can't read minds. Dr Tim Muller shows us a trick you can play on people. Tim's Code: https://pastebin.com/YheE3kJQ https://www.facebook.com/computerphile https://twitter.com/computer_phile This video was filmed and edited by Sean Riley. Computer Science at the University of Nottingham: https://bit.ly/nottscomputer Computerphile is a sister project to Brady Haran's Numberphile. More at http://www.bradyharan.com

Computer bugs were found to be the reason many sub-postmasters and sub-postmistresses were wrongly convicted of stealing and false accounting. Professor Steven Murdoch, a professor of Security Engineering and a Royal Society University Research Fellow at UCL explains the sorts of faults that were found. EXTRA BITS: https://youtu.be/1GnRlOgEIlo BBC Podcast about the Post Office Scandal: https://www.bbc.co.uk/sounds/series/m000jf7j https://www.facebook.com/computerphile https://twitter.com/computer_phile This video was filmed and edited by Sean Riley. Computer Science at the University of Nottingham: https://bit.ly/nottscomputer Computerphile is a sister project to Brady Haran's Numberphile. More at http://www.bradyharan.com

Matching pictures on playing cards could have something in common with trying to guess which router has the correct routing table. Dr Tim Muller takes us through 'Gobble'! https://www.facebook.com/computerphile https://twitter.com/computer_phile This video was filmed and edited by Sean Riley. Computer Science at the University of Nottingham: https://bit.ly/nottscomputer Computerphile is a sister project to Brady Haran's Numberphile. More at http://www.bradyharan.com

Discussing autonomous vehicles aka driverless cars with Prof. Subramanian "Ram" Ramamoorthy, Personal Chair of Robot Learning and Autonomy, University of Edinburgh. https://www.facebook.com/computerphile https://twitter.com/computer_phile This video was filmed and edited by Sean Riley. Computer Science at the University of Nottingham: https://bit.ly/nottscomputer Computerphile is a sister project to Brady Haran's Numberphile. More at http://www.bradyharan.com

"Just send me a PDF!" - but what kind of PDF? As Professor Brailsford explains, PDF is simply a wrapper which can contain a variety of joys! https://www.facebook.com/computerphile https://twitter.com/computer_phile This video was filmed and edited by Sean Riley. Computer Science at the University of Nottingham: https://bit.ly/nottscomputer Computerphile is a sister project to Brady Haran's Numberphile. More at http://www.bradyharan.com

Exponential growth is a term that's used a lot, but our intuition can play tricks on understanding it. Dr Tim Muller takes us through some examples that demonstrate just how quickly things get out of hand. https://www.facebook.com/computerphile https://twitter.com/computer_phile This video was filmed and edited by Sean Riley. Computer Science at the University of Nottingham: https://bit.ly/nottscomputer Computerphile is a sister project to Brady Haran's Numberphile. More at http://www.bradyharan.com

How much of a problem is DeepFake, the ability to swap people's faces around? Dr Mike Pound decided to try it with colleague Dr Steve Bagley. https://www.facebook.com/computerphile https://twitter.com/computer_phile This video was filmed and edited by Sean Riley. Computer Science at the University of Nottingham: https://bit.ly/nottscomputer Computerphile is a sister project to Brady Haran's Numberphile. More at http://www.bradyharan.com

Professor Brailsford has been toiling away on a faithful recreation of Unix co-creator Dennis Ritchie's unsubmitted PhD thesis. The Computer History Museum material on Dennis's lost thesis is at: https://computerhistory.org/blog/discovering-dennis-ritchies-lost-dissertation/ The Ritchie family's Web site about the devices (hardware and software) that Dennis used to create his thesis is at: https://dmrthesis.net/ https://www.facebook.com/computerphile https://twitter.com/computer_phile This video was filmed and edited by Sean Riley. Computer Science at the University of Nottingham: https://bit.ly/nottscomputer Computerphile is a sister project to Brady Haran's Numberphile. More at http://www.bradyharan.com

With dozens of affordable 3D printers out there, why re-invent the (filament) wheel? Feng Zhou has a plan, to improve the strength of 3D printed objects. https://www.facebook.com/computerphile https://twitter.com/computer_phile This video was filmed and edited by Sean Riley. Computer Science at the University of Nottingham: https://bit.ly/nottscomputer Computerphile is a sister project to Brady Haran's Numberphile. More at http://www.bradyharan.com

Once the Unix games arrived, it wasn't long before coders were looking for ways to game the games. Enter Rog-O-Matic - the program designed to play Rogue. Dr Julian Onions has been tweaking his copy for decades! https://www.facebook.com/computerphile https://twitter.com/computer_phile This video was filmed and edited by Sean Riley. Computer Science at the University of Nottingham: https://bit.ly/nottscomputer Computerphile is a sister project to Brady Haran's Numberphile. More at http://www.bradyharan.com

When you relocate a robot, how does it work out where it is? Dr Ayse Kucukyilmaz explains how there's uncertainty at every turn. https://www.facebook.com/computerphile https://twitter.com/computer_phile This video was filmed and edited by Sean Riley. Computer Science at the University of Nottingham: https://bit.ly/nottscomputer Computerphile is a sister project to Brady Haran's Numberphile. More at http://www.bradyharan.com

To send binary files via a text based system, they'll need encoding. Dr Steve Bagley takes us through the attachment system used in email. https://www.facebook.com/computerphile https://twitter.com/computer_phile This video was filmed and edited by Sean Riley. Computer Science at the University of Nottingham: https://bit.ly/nottscomputer Computerphile is a sister project to Brady Haran's Numberphile. More at http://www.bradyharan.com

Build a virtual switching network inside your own computer. Dr Richard G Clegg of Queen Mary University London demonstrates building a software network configured with Python. Richard's Github link: http://bit.ly/C_RichardGC-OpenFlow https://www.facebook.com/computerphile https://twitter.com/computer_phile This video was filmed and edited by Sean Riley. Computer Science at the University of Nottingham: https://bit.ly/nottscomputer Computerphile is a sister project to Brady Haran's Numberphile. More at http://www.bradyharan.com

Enigma is known as the WWII cipher, but how does it hold up in 2021? Dr Mike Pound implemented it and shows how it stacks up against his laptop. Mikes Code: http://bit.ly/C_Mike_enigma Cryptool v2 is here: http://bit.ly/C_Cryptool The original paper that Mike's attack is based off https://web.archive.org/web/20060720040135/http://members.fortunecity.com/jpeschel/gillog1.htm https://www.facebook.com/computerphile https://twitter.com/computer_phile This video was filmed and edited by Sean Riley. Computer Science at the University of Nottingham: https://bit.ly/nottscomputer Computerphile is a sister project to Brady Haran's Numberphile. More at http://www.bradyharan.com

How about a Neural Net where the neurons are actual atoms? Professor Phil Moriarty shows a paper demonstrating the principle from researchers at Radboud University in The Netherlands. Professor Moriarty's blog with more detail: http://bit.ly/C_AtomicBrain https://www.facebook.com/computerphile https://twitter.com/computer_phile This video was filmed and edited by Sean Riley. Computer Science at the University of Nottingham: https://bit.ly/nottscomputer Computerphile is a sister project to Brady Haran's Numberphile. More at http://www.bradyharan.com

Games like rogue were revolutionary for terminal based Unix systems - Dr Julian Onions on some of the tricks they used. https://www.facebook.com/computerphile https://twitter.com/computer_phile This video was filmed and edited by Sean Riley. Computer Science at the University of Nottingham: https://bit.ly/nottscomputer Computerphile is a sister project to Brady Haran's Numberphile. More at http://www.bradyharan.com

Professor Brailsford discusses Ken Thompson's ACM Turing Award acceptance paper "Reflections on Trusting Trust" Ken Thompson's Paper: http://bit.ly/C_trustingtrust https://www.facebook.com/computerphile https://twitter.com/computer_phile This video was filmed and edited by Sean Riley. Computer Science at the University of Nottingham: https://bit.ly/nottscomputer Computerphile is a sister project to Brady Haran's Numberphile. More at http://www.bradyharan.com

Looking at the audio mechanics and algorithms behind music identifier apps. David Domminney Fowler built a demo you can try yourself. EXTRA BITS: https://youtu.be/T6OLVCQfuBE Play with Dave's demonstrator here: https://bit.ly/3qRo9t9 More about David Domminney Fowler: https://bit.ly/38IhX0p https://www.facebook.com/computerphile https://twitter.com/computer_phile This video was filmed and edited by Sean Riley. Computer Science at the University of Nottingham: https://bit.ly/nottscomputer Computerphile is a sister project to Brady Haran's Numberphile. More at http://www.bradyharan.com

Professor Brailsford recalls the advent of Unix v7 and AT&T's licensing procedure. https://www.facebook.com/computerphile https://twitter.com/computer_phile This video was filmed and edited by Sean Riley. Computer Science at the University of Nottingham: https://bit.ly/nottscomputer Computerphile is a sister project to Brady Haran's Numberphile. More at http://www.bradyharan.com

The hidden technology that's behind apps like Visual Studio Code & Skype is web based. David Domminney Fowler chats Google's V8, node.js & HTML5 More about David Domminney Fowler: https://youtube.com/c/DavidDomminneyFowler https://www.facebook.com/computerphile https://twitter.com/computer_phile This video was filmed and edited by Sean Riley. Computer Science at the University of Nottingham: https://bit.ly/nottscomputer Computerphile is a sister project to Brady Haran's Numberphile. More at http://www.bradyharan.com

The only viable alternative to AES? Dr Mike Pound unravels the clever ChaCha cipher. https://www.facebook.com/computerphile https://twitter.com/computer_phile This video was filmed and edited by Sean Riley. Computer Science at the University of Nottingham: https://bit.ly/nottscomputer Computerphile is a sister project to Brady Haran's Numberphile. More at http://www.bradyharan.com

The Internet of Things wouldn't be here if not for Mark Weiser and the team at Xerox Parc. Dr Stuart Reeves explains the vision. https://www.facebook.com/computerphile https://twitter.com/computer_phile This video was filmed and edited by Sean Riley. Computer Science at the University of Nottingham: https://bit.ly/nottscomputer Computerphile is a sister project to Brady Haran's Numberphile. More at http://www.bradyharan.com

RFCs are standards. Aren't they? - Dr Julian Onions on how Request for Comments started, and aren't always what they seem. https://www.facebook.com/computerphile https://twitter.com/computer_phile This video was filmed and edited by Sean Riley. Computer Science at the University of Nottingham: https://bit.ly/nottscomputer Computerphile is a sister project to Brady Haran's Numberphile. More at http://www.bradyharan.com

Traceroute is a standard networking tool, but can it be used to recreate all those film scenes where a 'trace' is put on a signal? Dr Richard G Clegg, Queen Mary University of London shows us the neat hack that makes it work and has a go at that supervillain map! Richard's github: https://github.com/richardclegg/vis_route https://www.facebook.com/computerphile https://twitter.com/computer_phile This video was filmed and edited by Sean Riley. Computer Science at the University of Nottingham: https://bit.ly/nottscomputer Computerphile is a sister project to Brady Haran's Numberphile. More at http://www.bradyharan.com

How many times have you been asked to share 'anonymous' location data? Andrea shows just how simple it can be to work out who's who. Andrea Gadotti is a researcher in the Computational Privacy Group at Imperial College London (https://cpg.doc.ic.ac.uk/) Papers referenced by Andrea: Unique in the Crowd: The privacy bounds of human mobility (https://www.nature.com/articles/srep01376) Where You Are Is Who You Are: User Identification by Matching Statistics (https://arxiv.org/abs/1512.02896v1) https://www.facebook.com/computerphile https://twitter.com/computer_phile This video was filmed and edited by Sean Riley. Computer Science at the University of Nottingham: https://bit.ly/nottscomputer Computerphile is a sister project to Brady Haran's Numberphile. More at http://www.bradyharan.com

Could Dave recreate audio from a wav file preview image grabbed from a screen cap? More about David Domminney Fowler: http://bit.ly/C_DDF_www https://www.facebook.com/computerphile https://twitter.com/computer_phile This video was filmed and edited by Sean Riley. Computer Science at the University of Nottingham: https://bit.ly/nottscomputer Computerphile is a sister project to Brady Haran's Numberphile. More at http://www.bradyharan.com Dave's Code: (angle brackets weren't allowed in YT description) using System; using System.Collections.Generic; using System.Drawing; using System.Linq; using System.Text; using System.Threading.Tasks; namespace Extract_Audio { internal class Program { private static void Main(string[] args) { string file = "computerphile.png"; Bitmap b = new Bitmap(@"g:\Computerphile\" + file); var values = new System.Collections.Generic.ListANGLEBRACKETOPENintANGLEBRACKETCLOSE(); for (int x = 0; x ANGLEBRACKETOPEN b.Width; x++) { int max = 0; int min = b.Height; for (int y = 0; y ANGLEBRACKETOPEN b.Height; y++) { if (b.GetPixel(x, y).GetBrightness() ANGLEBRACKETCLOSE 0.5) { min = Math.Min(y, min); max = Math.Max(max, y); } } values.Add(min); values.Add(max); } int filter = 4; for (int x = 0; x ANGLEBRACKETOPEN values.Count - filter; x++) values[x] = (int)values.GetRange(x, filter).Average(); var f = new System.IO.StreamWriter($@"g:\Computerphile\{file}.txt"); foreach (var v in values) f.WriteLine(v); f.Close(); var wf = System.IO.File.OpenWrite($@"g:\Computerphile\{file}.wav"); var RIFF_HEADER = new byte[] { 0x52, 0x49, 0x46, 0x46 }; var FORMAT_WAVE = new byte[] { 0x57, 0x41, 0x56, 0x45 }; var FORMAT_TAG = new byte[] { 0x66, 0x6D, 0x74, 0x20 }; var AUDIO_FORMAT = new byte[] { 0x1, 0x0 }; var SUBCHUNK_ID = new byte[] { 0x64, 0x61, 0x74, 0x61 }; int BYTES_PER_SAMPLE = 1; int samplerate = 48000; int channelcount = 1; int lastv2 = 0; int stretch = 9; int datalength = values.Count * stretch * BYTES_PER_SAMPLE; int byteRate = samplerate * channelcount * BYTES_PER_SAMPLE; int blockAlign = channelcount * BYTES_PER_SAMPLE; wf.Write(RIFF_HEADER, 0, RIFF_HEADER.Length); wf.Write(BitConverter.GetBytes(datalength + 40), 0, 4); wf.Write(FORMAT_WAVE, 0, FORMAT_WAVE.Length); wf.Write(FORMAT_TAG, 0, FORMAT_TAG.Length); wf.Write(BitConverter.GetBytes(16), 0, 4); wf.Write(AUDIO_FORMAT, 0, AUDIO_FORMAT.Length); wf.Write(BitConverter.GetBytes(channelcount), 0, 2); wf.Write(BitConverter.GetBytes(samplerate), 0, 4); wf.Write(BitConverter.GetBytes(byteRate), 0, 4); wf.Write(BitConverter.GetBytes(blockAlign), 0, 2); wf.Write(BitConverter.GetBytes(BYTES_PER_SAMPLE * 8), 0, 2); wf.Write(SUBCHUNK_ID, 0, SUBCHUNK_ID.Length); wf.Write(BitConverter.GetBytes(datalength), 0, 4); foreach (var v in values) { double v2 = (v - values.Min()) / (double)(values.Max() - values.Min()) * 255; for (int x = 0; x ANGLEBRACKETOPEN stretch; x++) { double v3 = x / (double)stretch * v2 + (1 - x / (double)stretch) * lastv2; wf.WriteByte(Convert.ToByte(v3)); } lastv2 = (int)v2; } wf.Close(); } } }

RSA is widespread on the Internet, and uses large prime numbers - but how does it work? Dr Tim Muller takes us through the details. Apologies for the poor audio quality of this video which is due to the remote nature in which it was recorded. https://www.facebook.com/computerphile https://twitter.com/computer_phile This video was filmed and edited by Sean Riley. Computer Science at the University of Nottingham: https://bit.ly/nottscomputer Computerphile is a sister project to Brady Haran's Numberphile. More at http://www.bradyharan.com

How do you share a 1960's computer across a bunch of islands? Wireless networking of course - although, like Norman Abramson & his team, you'd have to invent it first. Dr Steve Bagley on Hawaii's Aloha Net. https://www.facebook.com/computerphile https://twitter.com/computer_phile This video was filmed and edited by Sean Riley. Computer Science at the University of Nottingham: https://bit.ly/nottscomputer Computerphile is a sister project to Brady Haran's Numberphile. More at http://www.bradyharan.com

Used by millions every day we're dissecting mice today. Dr Steve Bagley takes us through the workings, starting with a ball-powered rodent. https://www.facebook.com/computerphile https://twitter.com/computer_phile This video was filmed and edited by Sean Riley. Computer Science at the University of Nottingham: https://bit.ly/nottscomputer Computerphile is a sister project to Brady Haran's Numberphile. More at http://www.bradyharan.com

Billions of possibilities - Dr Alex Turner borrowed some cluster time to obtain all of the potential results from all the possible games of Countdown's Numbers Game. Thanks to David Domminney Fowler for creating our 'quiz show counting' music - more about Dave here: https://youtube.com/DavidDomminneyFowler https://www.facebook.com/computerphile https://twitter.com/computer_phile This video was filmed and edited by Sean Riley. Computer Science at the University of Nottingham: https://bit.ly/nottscomputer Computerphile is a sister project to Brady Haran's Numberphile. More at http://www.bradyharan.com

How do you verify that someone is who they say they are? Dr Mike Pound on digital signatures. https://www.facebook.com/computerphile https://twitter.com/computer_phile This video was filmed and edited by Sean Riley. Computer Science at the University of Nottingham: https://bit.ly/nottscomputer Computerphile is a sister project to Brady Haran's Numberphile. More at http://www.bradyharan.com

When Sun added network abilities to a messaging feature, one user managed to contact more people than he'd bargained for. Dr Julian Onions takes us through the rwall incident of 1987. https://www.facebook.com/computerphile https://twitter.com/computer_phile This video was filmed and edited by Sean Riley. Computer Science at the University of Nottingham: https://bit.ly/nottscomputer Computerphile is a sister project to Brady Haran's Numberphile. More at http://www.bradyharan.com

Program Correctness is incredibly important in computing - particularly in hardware design. Professor Graham Hutton takes us through a simple example using arithmetic. EXTRA BITS: https://youtu.be/TByzerWLKg8 https://www.facebook.com/computerphile https://twitter.com/computer_phile This video was filmed and edited by Sean Riley. Computer Science at the University of Nottingham: https://bit.ly/nottscomputer Computerphile is a sister project to Brady Haran's Numberphile. More at http://www.bradyharan.com

Underpinning the Internet are countless network routers - how do they work out the route to send your data along? Dr Richard G Clegg, Queen Mary University of London explains the Bellman Ford distance vector algorithm. https://www.facebook.com/computerphile https://twitter.com/computer_phile This video was filmed and edited by Sean Riley. Computer Science at the University of Nottingham: https://bit.ly/nottscomputer Computerphile is a sister project to Brady Haran's Numberphile. More at http://www.bradyharan.com

Demonstrating how complex systems can arise from simple rules, random boolean networks also have some surprising properties... sometimes! Dr Alex Turner generates some. https://www.facebook.com/computerphile https://twitter.com/computer_phile This video was filmed and edited by Sean Riley. Computer Science at the University of Nottingham: https://bit.ly/nottscomputer Computerphile is a sister project to Brady Haran's Numberphile. More at http://www.bradyharan.com

How does your computer arrange with a server to start talking in code? Dr Mike Pound explains the TLS handshake where the server and client organise everything. https://www.facebook.com/computerphile https://twitter.com/computer_phile This video was filmed and edited by Sean Riley. Computer Science at the University of Nottingham: https://bit.ly/nottscomputer Computerphile is a sister project to Brady Haran's Numberphile. More at http://www.bradyharan.com

In November 1988 the first worm caused huge problems on the Internet. Dr Julian Onions remembers the story. https://www.facebook.com/computerphile https://twitter.com/computer_phile This video was filmed and edited by Sean Riley. Computer Science at the University of Nottingham: https://bit.ly/nottscomputer Computerphile is a sister project to Brady Haran's Numberphile. More at http://www.bradyharan.com

It's absolutely everywhere, but what is TLS and where did it come from? Dr Mike Pound explains the background behind this ubiquitous Internet security protocol. Heartbleed, Running the Code: https://www.youtube.com/watch?v=1dOCHwf8zVQ Secure Web Browsing: https://www.youtube.com/watch?v=E_wX40fQwEA Network Stacks & The Internet: https://www.youtube.com/watch?v=PG9oKZdFb7w&t=2s https://www.facebook.com/computerphile https://twitter.com/computer_phile This video was filmed and edited by Sean Riley. Computer Science at the University of Nottingham: https://bit.ly/nottscomputer Computerphile is a sister project to Brady Haran's Numberphile. More at http://www.bradyharan.com

Millions of lines of code - how do you keep them bug free? Facebook's Professor Peter O'Hearn talks us through "Infer" their code checker which dallies with the idea of undecidability. EXTRA BITS: https://youtu.be/7rYr6EQS7Co Turing & The Halting Problem: https://www.youtube.com/watch?v=macM_MtS_w4 How Turing Machines Work: https://www.youtube.com/watch?v=dNRDvLACg5Q https://www.facebook.com/computerphile https://twitter.com/computer_phile This video was filmed and edited by Sean Riley. Computer Science at the University of Nottingham: https://bit.ly/nottscomputer Computerphile is a sister project to Brady Haran's Numberphile. More at http://www.bradyharan.com

Breaking the unbreakable loop. More on how self-modifying code can be a neat hack, that's almost unmaintainable. Dr Julian Onions recalls the "Real Programmer" story that circulated in the early '80s. Earlier Episodes about Mel: https://www.youtube.com/playlist?list=PLzH6n4zXuckoXiDGh3c16nMCPABZKHc9I Wheeler Jump: https://youtu.be/zR8V0lq029c Alderson Loop: https://youtu.be/Rh1IQwXy3Y8 Inside the CPU: https://youtu.be/IAkj32VPcUE https://www.facebook.com/computerphile https://twitter.com/computer_phile This video was filmed and edited by Sean Riley. Computer Science at the University of Nottingham: https://bit.ly/nottscomputer Computerphile is a sister project to Brady Haran's Numberphile. More at http://www.bradyharan.com

Tournament selection, roulette selection, mutation, crossover - all processes used in genetic algorithms. Dr Alex Turner explains using the Knapsack Problem. https://www.facebook.com/computerphile https://twitter.com/computer_phile This video was filmed and edited by Sean Riley. Computer Science at the University of Nottingham: https://bit.ly/nottscomputer Computerphile is a sister project to Brady Haran's Numberphile. More at http://www.bradyharan.com

Computer Scientists had to make choices for what system to use for different student use cases. Professor Brailsford on whether to choose Algol 68 or Pascal. Or both. https://www.facebook.com/computerphile https://twitter.com/computer_phile This video was filmed and edited by Sean Riley. Computer Science at the University of Nottingham: https://bit.ly/nottscomputer Computerphile is a sister project to Brady Haran's Numberphile. More at http://www.bradyharan.com

Virtual Backgrounds and grainy webcams - what else can we do to improve video conferencing? Dr Max Wilson on a couple of innovations you can try today. https://www.facebook.com/computerphile https://twitter.com/computer_phile This video was filmed and edited by Sean Riley. Computer Science at the University of Nottingham: https://bit.ly/nottscomputer Computerphile is a sister project to Brady Haran's Numberphile. More at http://www.bradyharan.com

Memristors, Artificial Synapses & Neomorphic Computing. Dr Phil Moriarty on the limitations of the Von Neumann architecture and what could be next. Phil's blog post: https://muircheartblog.wpcomstaging.com/2020/09/10/i-remember-now Von Neumann Architecture: https://www.youtube.com/watch?v=Ml3-kVYLNr8 https://www.facebook.com/computerphile https://twitter.com/computer_phile This video was filmed and edited by Sean Riley. Computer Science at the University of Nottingham: https://bit.ly/nottscomputer Computerphile is a sister project to Brady Haran's Numberphile. More at http://www.bradyharan.com

The highest signed 32bit integer is a ticking timebomb - sort of... Dr Tim Muller explains why it's his #MegaFavNumber This re-upload features a slight repair to the audio where Dr Muller mis-spoke 'un-signed' instead of signed https://www.facebook.com/computerphile https://twitter.com/computer_phile This video was filmed and edited by Sean Riley. Computer Science at the University of Nottingham: https://bit.ly/nottscomputer Computerphile is a sister project to Brady Haran's Numberphile. More at http://www.bradyharan.com

Laziness is a virtue - well, in programming anyway! Professor Thorsten Altenkirch on how you can use the 'yield' to compute certain things "on demand" To Infinity & Beyond: https://www.youtube.com/watch?v=bnRNiE_OVWA Python Sudoku Solver: https://www.youtube.com/watch?v=G_UYXzGuqvM&t=9s https://www.facebook.com/computerphile https://twitter.com/computer_phile This video was filmed and edited by Sean Riley. Computer Science at the University of Nottingham: https://bit.ly/nottscomputer Computerphile is a sister project to Brady Haran's Numberphile. More at http://www.bradyharan.com

How 'not to code' with our "real" programmer - who, as Julian explains, is demoing what NOT to do. Dr Julian Onions tells us more about Mel. https://www.facebook.com/computerphile https://twitter.com/computer_phile This video was filmed by Julian Onions and edited by Sean Riley. Computer Science at the University of Nottingham: https://bit.ly/nottscomputer Computerphile is a sister project to Brady Haran's Numberphile. More at http://www.bradyharan.com

Pascal evolved from Algol 60. Professor Brailsford discusses the rift in the Algol committee that led to its creation. Brian Kernighan's Bell Labs Memo: http://www.eprg.org/computerphile/pascal.pdf EXTRA BITS: https://youtu.be/nA_FXCzibgw https://www.facebook.com/computerphile https://twitter.com/computer_phile This video was filmed and edited by Sean Riley. Computer Science at the University of Nottingham: https://bit.ly/nottscomputer Computerphile is a sister project to Brady Haran's Numberphile. More at http://www.bradyharan.com

We put some of your questions to Dr Mike Pound. Stolen Bitcoing Tracing - Ross Anderson: https://youtu.be/UlLN0QERWBs Feistel Cipher: https://youtu.be/FGhj3CGxl8I AES Explained: https://youtu.be/O4xNJsjtN6E Elliptic Curve Back Door: https://youtu.be/nybVFJVXbww Parsing Explained: https://youtu.be/bxpc9Pp5pZM Data Analysis Learning Playlist: https://www.youtube.com/playlist?list=PLzH6n4zXuckpfMu_4Ff8E7Z1behQks5ba Secret Key Exchange (Diffie-Hellman): https://youtu.be/NmM9HA2MQGI Professor Ross Anderson's Book: https://bit.ly/39LH4yl https://www.facebook.com/computerphile https://twitter.com/computer_phile This video was filmed and edited by Sean Riley. Computer Science at the University of Nottingham: https://bit.ly/nottscomputer Computerphile is a sister project to Brady Haran's Numberphile. More at http://www.bradyharan.com

Discussing "Real" Programmers from the early days of computing with Dr Julian Onions. https://www.facebook.com/computerphile https://twitter.com/computer_phile This video was filmed and edited by Sean Riley. Computer Science at the University of Nottingham: https://bit.ly/nottscomputer Computerphile is a sister project to Brady Haran's Numberphile. More at http://www.bradyharan.com

Poisoning the DNS cache is a sure way to serve malware to unsuspecting users. Dr Mike Pound explains some of the ways this has been accomplished. https://www...

What's in an eBook file? Dr Steve Bagley delves inside 'Beautiful Code' to find out. As we used "Beautiful Code" as our example, here's a link to the publish...

How do websites marry up to their IP addresses? Dr Mike Pound explains the Domain Name System - DNS. https://www.facebook.com/computerphile https://twitter.c...

Basic mathematics from a language model? Rob Miles on GPT3, where it seems like size does matter! More from Rob Miles: http://bit.ly/Rob_Miles_YouTube https:...

Coding Partial Derivatives in Python is a good way to understand what Machine Learning "secret sauce" has to do. Professor Thorsten Altenkirch explains what ...

Taking the Squash Pong game and using data science to make it AI powered! Dr Isaac Triguero uses regression & nearest neighbour. Playlist of all four videos:...

Squash-Pong needs a ball and a paddle - Dr Isaac Triguero continues the PyGame mini-series. Watch part 11 before it goes live: https://youtu.be/VyrAVNoEf0g T...

The second part of Dr Isaac Triguero's walkthrough of creating a Pong-like game in Python, using PyGame. Part 00 : https://youtu.be/JRLdbt7vK-E Part 10 : htt...

In this mini-series, Dr Isaac Triguero walks us through creating a simple Pong-like game in Python, using the PyGame library. Thorsten & Isaac's Python progr...

ALGOL 60, a brand new programming language, 60 years ago! Professor Brailsford used to have to teach it - here he shows us some of the code. EXTRA BITS: http...

Improve the efficiency of recursive code by re-writing it to be tail recursive. Professor Graham Hutton explains. EXTRA BITS: https://youtu.be/eoi3s_4mAAc ht...

You don't just 'run a cipher' - you need a mode of operation. Dr Mike Pound explains some relative to the Feistel cipher. **This video was filmed before any ...

Zoom, House Party, Teams, Skype or whatever. Dr Steve Bagley on the trade-offs all platforms must balance to keep you connected. https://www.facebook.com/com...

Professor Brailsford on why he's updating his OS and Hardware while in isolation (with remote support from Dr Bagley) EXTRA BITS (Sean & the Prof chatting ab...

As we contemplate life after lock-down, what technology could help the health services to work out how viruses can spread? Dr Mike Pound & Dr Steve Bagley ch...

https://www.facebook.com/computerphile https://twitter.com/computer_phile This video was filmed by Professor Brailsford and Sean Riley & edited by Sean Riley...

Why it's a bad idea to build a Virtual Private Network using TCP. Dr Steve Bagley on TCP over TCP... https://www.facebook.com/computerphile https://twitter.c...

Kerberos is an authentication method - Dr Mike Pound explains how it works so neatly. EXTRA BITS: Kerberos Q&A https://youtu.be/QN4WmZXi4tg https://www.faceb...

It's all about the input. You can't always give all a function's inputs at the same time. Professor Graham Hutton explains about curried functions. https://w...

As we move towards a remote working culture, Dr Steve Bagley remotely connects to explain what VPN is & how it works. https://www.facebook.com/computerphile ...

To save silicon, RAM is built to forget. Dr Steve Bagley explains how dynamic memory saves on space but at a cost. Computer Memory Playlist: https://www.yout...

What do the various levels of encryption mean, and why use one over another? Dr Mike Pound takes us through the cryptic world of encryption levels. https://w...

Bring Donkey Kong home! - The unenviable task given to Masayuki Uemura by Nintendo bosses in the early '80s. Unimpressed by Atari's 2600 they set out to brin...

For Mathematics, trees are more useful than strings. Professor Thorsten Altenkirch takes us through a functional approach to coding them in Python. Thorsten'...

Working with regular expressions to decode Roman Numerals. Professor Brailsford is on the case. EXTRA BITS - Roman Numerals Reminder: https://youtu.be/j4opDi...

One of the most elegant solutions for cryptography. Dr Mike Pound explains one of his most favourite ciphers. https://www.facebook.com/computerphile https://...

Why are some cameras faster to focus than others? Dr Andy French explains the different approaches the computers inside cameras use to focus. https://www.fac...

Fun comes in many forms - playing puzzles, or writing programs that solve the puzzles for you. Professor Thorsten Altenkirch on a recursive Sudoku solver. ht...

How do computers represent multi-dimensional data? Dr Mike Pound explains the mapping. https://www.facebook.com/computerphile https://twitter.com/computer_ph...

Functional or Combinator Parsing explained by Professor Graham Hutton. Professor Hutton's Functional Parsing Library: http://bit.ly/C_FunctParsLib https://ww...

Check out today's sponsor Fasthosts for all of your UK web hosting needs: https://www.fasthosts.co.uk/computerphile Rob Miles discusses the idea of a gym for...

Professor Brailsford takes the theory of RegEx and puts it into practice. EXTRA BITS: https://youtu.be/4uMS2ZPsoVw https://www.facebook.com/computerphile htt...

Check out today's sponsor Fasthosts for all of your UK web hosting needs: https://www.fasthosts.co.uk/computerphile Hello World on the Sega Megadrive/Genesis...

In the early days the UK had its own thoughts on how email addresses should look. Dr Julian Onions was there! https://www.facebook.com/computerphile https://...

Atari to Zelda, the National Videogame Museum has it covered - Conor Clarke gave Computerphile a personal tour. More about the National Videogame Museum: htt...

Professor Brailsford on one of our most requested topics. Playlist of Videos the Prof mentioned: https://www.youtube.com/playlist?list=PLzH6n4zXuckpkgSrHX87s...

Was the Y2K bug a complete non-event? Dr Steve Bagley on why it was 'a thing' and how it was worked around. Advanced Encryption Standard Explained: https://w...

https://www.facebook.com/computerphile https://twitter.com/computer_phile This video was filmed and edited by Sean Riley. Computer Science at the University ...

Looking at the Alderson Loop with Dr Steve Bagley. Behind the scenes on the camera rig used for this episode: https://www.youtube.com/watch?v=F_F5Jvc35z4 htt...

Introducing Erlang - with Francesco Cesarini Technical Director of Erlang Solutions. https://www.facebook.com/computerphile https://twitter.com/computer_phil...

Professor Brailsford points his parsing program towards a galaxy far, far away.... EXTRA BITS https://youtu.be/gahrebvOAtY The Professor's Files: https://bit...

Discussing Immutability with Francesco Cesarini, Technical Director of Erlang Solutions https://www.facebook.com/computerphile https://twitter.com/computer_p...

Having explained the top-down method, Professor Brailsford flips to bottom up Parsing. EXTRA BITS: https://youtu.be/jzpYiuD2ffo https://www.facebook.com/comp...

Advanced Encryption Standard - Dr Mike Pound explains this ubiquitous encryption technique. n.b in the matrix multiplication animation, the matrices are in t...

We look at where the ubiquitous AES came from. Dr Mike Pound introduces the Rijndael algorithm. SP Networks: https://youtu.be/DLjzI5dX8jc How AES Works: http...

Smart speakers & voice controlled assistants are used more and more, but just how do those systems work? Dr Stuart Reeves of Nottingham's Mixed Reality Lab e...

How ambiguity is dangerous! Professor Brailsford simplifies parsing. EXTRA BITS: https://youtu.be/Airi85CPdPk Angle Brackets: https://youtu.be/1IdlBFaifcs ht...

50 Years since the first packet was sent from one university to another, we asked about first memories of using the Internet. Featuring: Dave Brailsford Aaro...

The Internet is 50 - Dr Julian Onions recalls working to bring the Internet to Nottingham. https://www.facebook.com/computerphile https://twitter.com/compute...

Using VR to capture visitors' commentary on museum pieces. Jocelyn Spence talks us through the VRtefacts system. VR with 3D Printed Props: https://youtu.be/E...

How do you represent a word in AI? Rob Miles reveals how words can be formed from multi-dimensional vectors - with some unexpected results. 08:06 - Yes, it's...

Optical Flow solutions - following on from Dr French's previous video explaining Optic Flow, we dive in to some ways to tackle the problem. https://www.faceb...

Pixel level movement in images - Dr Andy French takes us through the idea of Optic or Optical Flow. Finding the Edges (Sobel): https://youtu.be/uihBwtPIBxM M...

Concluding his series on compilers and porting, Professor Brailsford takes the plunge and "T-Diagrams" his way over to a new machine. Previous Video: https:/...

No need to understand Turing machines to comprehend the halting problem. Professor Thorsten Altenkirch has a way of using Python to demonstrate the issue. Th...

Taking T-Diagrams to the next level, Professor Brailsford tries to improve last episode's intermediate codes. Grateful thanks to Dr Ron Knott for permission ...

Recursion can be tricky to grasp. Professor Thorsten Altenkirch uses Python to demonstrate an example taken from his latest book. More on recursion: https://...

2GHz ≠ 2GHz - Well sometimes! Dr Steve Bagley on why the clock cycles of a CPU aren't enough to measure its speed. https://www.facebook.com/computerphile htt...

Scanning objects for use in VR is one thing - but how do you get that haptic feel? Print the object and skin it in VR. Dr Dimitrios Darzentas shows us the ki...

How does an operating system juggle different programs? Dr Steve Bagley explains Context Switching. EXTRA BITS: https://youtu.be/R5ePBrrEON0 https://www.face...

Can there be a universal intermediate programming language? Sounds like Esperanto to us - Professor Brailsford has more. https://www.facebook.com/computerphi...

Cross compile or 'invade' the machine you want to work with - Professor Brailsford discusses various options to making a system work. https://www.facebook.co...

We've been asking "What's your favourite (favorite) shortcut key?" as a soundcheck question (this slightly overlapped the "What's your favourite programming ...

With nefarious big tech companies wanting all your data, could Web 3.0 be the answer? Discussing with Professor Derek McAuley. https://www.facebook.com/compu...

Prehistoric WiFi? Converting bits into audio and broadcasting them via radio - Dr Aaron Jackson demos packet radio. https://www.facebook.com/computerphile ht...

A quick tour of the Raspberry Pi 4 edited on the Raspberry Pi 4. Dr Steve Bagley gets out his knife.dll to unbox Sean's purchases! EXTRA BITS: Editing on the...

Substitution-permutation networks are the basis for almost all modern symmetric cryptography. Dr Mike Pound explains. https://www.facebook.com/computerphile ...

Multitasking is a hoax - clever techniques mean that your CPU is shuffling between lots of tasks, but doing them one at a time. Dr Steve Bagley regenerates h...

GANs are powerful but difficult to balance - Dr Mike Pound explores the CycleGAN - two GANs set up together. Original Paper: https://junyanz.github.io/CycleG...

Professor Brailsford with an example of what he had to do when Computer A didn't talk to Computer B. https://www.facebook.com/computerphile https://twitter.c...

Why didn't OpenAI release their "Unicorn" GPT2 large transformer? Rob Miles suggests why it might not just be a a PR stunt. Unicorn AI: https://youtu.be/89A4...

Using T-Diagrams, Professor Brailsford shows us how to take our compiler to the next level. Previous video on t-diagrams: https://www.youtube.com/watch?v=Pje...

More examples of how GPT-2 pays attention to things. Rob Miles https://www.facebook.com/computerphile https://twitter.com/computer_phile This video was filme...

Big Data does not equate to Big Knowledge - unless you use data analysis. This is part 0 of the Data Analysis Learning Playlist: https://www.youtube.com/play...

For your eyes only! Classifying data isn't a spy trick. Dr Mike Pound creates a decision tree automatically from a data set. This is part 8 of the Data Analy...

A litre of fuel but a pint of milk - time to get all your data in the right units. Don't let Dr Mike's measuring habits put you off! This is part 4 of the Da...

PCA - Principle Component Analysis - finally explained in an accessible way, thanks to Dr Mike Pound. This is part 6 of the Data Analysis Learning Playlist: ...

Dr Mike Pound introduces a ten videos on data analysis: From 0-9. Full Data Analysis Learning Playlist here: https://www.youtube.com/playlist?list=PLzH6n4zXu...

Seeing is believing - Dr Mike Pound helps us understand how to turn our datapoints into Powerpoints. This is part 2 of the Data Analysis Learning Playlist: h...

Grouping similar things together - either users with similar habits, or products in an online shop. Dr Mike Pound on Clustering. This is part 7 of the Data A...

What is data? Dr Mike Pound begins to formalise this much used word. This is part 1 of the Data Analysis Learning Playlist: https://www.youtube.com/playlist?...

Real life doesn't fit into neat categories - Dr Mike Pound on some different ways to regress your data. This is part 9 of the Data Analysis Learning Playlist...

Too much data? Dr Mike Pound on how best to reduce your dataset. This is part 5 of the Data Analysis Learning Playlist: https://www.youtube.com/playlist?list...

A clean sweep. How to get rid of the unnecessary clutter in your data 'house' - Dr Mike Pound on Data Cleaning. This is part 3 of the Data Analysis Learning ...

GPT-2, the Language model that shocked the world with its entirely fictitious story about the unicorns inhabiting a secret South American valley. Rob Miles e...

We talk to Alex from LowSpecGamer about how he gets modern games to run on less capable hardware. Lens Blur in Video Games: https://youtu.be/vNG3ZAd8wCc Dith...

Plausible text generation has been around for a couple of years, but how does it work - and what's next? Rob Miles on Language Models and Transformers. More ...

Fingerprint scanners are everywhere, Dr Isaac Triguero talks about how your fingerprint can identify you. Bootstrapping with T-Diagrams: https://youtu.be/Pje...

How do you compile a compiler? Professor Brailsford starts to unpick the idea of bootstrapping. Bootstrapping: https://youtu.be/nslY1s0U9_c Factory of Ideas ...

After a recent collaboration with an artist, Professor Moriarty is exploring whether the physics within patterns and art can be exploited for computation. Fu...

Big Data is one thing, but what do you do if that data is constantly changing? Rebecca Tickle on Dynamic data. https://www.facebook.com/computerphile https:/...

Before typed code, there was toggled code. We get hands on with a PDP recreation based on a Raspberry Pi. The PiDP Project: http://bit.ly/C_PiDP11project Aar...

With all this talk of Big Data, we got Rebecca Tickle to explain just what makes data into Big Data. MapReduce: https://youtu.be/cvhKoniK5Uo https://www.face...

Understanding one of the most commonly used methods of transferring data from one machine to another. https://www.facebook.com/computerphile https://twitter....

Drawing windows and responding to events - what's going on 'under the hood' in your GUI? Dr Steve Bagley. Thanks to David Domminney Fowler for the YouTube vi...

Password1 is a terrible password, but how can I remember different secure passwords for each login? Use a password manager. Dr Mike Pound explains how they w...

Taking chatbots to the next level, with emotion recognition and gesture control. Dr Michel Valstar on Virtual Humans. EXTRA BITS: https://youtu.be/gRE30g7ACW...

On the "C16," Commodore slashed costs while other manufacturers added RAM - This didn't stop marketing from selling the machine though. Software houses had t...

Who's in control? The real difference between programming for command line, or programming for GUI. Dr Steve Bagley introduces the differences between the tw...

Commodore was a massive US computer company, but this machine was almost unknown outside a few European countries. CCH's Adrian shows us the 116, part of his...

The smarter way to dither. Dr Bagley takes us through the Floyd-Steinberg error diffusion dithering technique. https://www.facebook.com/computerphile https:/...

Machine Learning where you put in a fraction of the effort? What's not to like? - Dr Michel Valstar explains Active & Cooperative Learning. https://www.faceb...

Wires, chips, hand-written key caps, somehow this early version of the Sinclair ZX Spectrum survived. Jason Fitzpatrick of the Centre for Computing History d...

How do we represent multiple greys with simple black or white pixels? Dr Bagley joins the dots! Error Diffusion Dithering: COMING SOON How JPEG Works: https:...

Why has it gone quiet on graphene? We asked Sixty Symbols' Professor Laurence Eaves, who was part of the team who built the first graphene transistor. Fine S...

What's the simplest program you can write? Dr Steve Bagley on the layers of abstraction that bulk up Hello World. EXTRA BITS: https://youtu.be/wxZFWvgyuYs ht...

Would you type your password into a random box on the internet? Dr Mike Pound on ensuring your password hasn't already been hacked. Have I Been Pwned: https:...

Continuation of Dr Bagley's explanation of Floating Point Numbers: https://youtu.be/f4ekifyijIg https://www.facebook.com/computerphile https://twitter.com/co...

How much does a floating point processor improve floating point operations? Dr Bagley installed one to find out - and explains how computers store the bits. ...

Swarm robotics involve multiple robots cooperating. Researchers at Kirstin Petersen's Lab at Cornell are looking at soft robots as an affordable option. Grad...

Can deep learning improve your gaming experience? We have no idea but we know how it works. Dr Mike Pound on Deep Learned Super Sampling EXTRA BITS: https://...

A high level look at Reed Solomon - Professor Brailsford explains the basics of this complicated encoding technique. Multi Dimension Error Correction: https:...

Parsing applies to human language as much as computer code. Giancarlo Sandoval on the basics of parsing. https://www.facebook.com/computerphile https://twitt...

How do Madden, FIFA, PGA Tour get that lovely shallow depth of field in real time? Dr Mike Pound explains how Complex Gaussian Blurs can be separable. Mike's...

Fish locomotion is being researched by Stephen Howe at the Biomimicry Research & Innovation Center at the University of Akron, USA https://www.facebook.com/c...

Snake-like locomotion has all sorts of possible applications for robots. Dr Henry C. Astley from the Biomimicry Research & Innovation Center at the Universit...

Connecting via SSH to a remote machine is second nature to some, but how does it work? Dr Steve Bagley. Dr Mike Pound on Hashing (mentions padding but full v...

Why encrypted group messaging isn't as secure as point to point. Dr Mike Pound explains this ongoing problem. Instant Messaging & the Signal Protocol: https:...

Nottingham Hackspace, or Nottinghack has starred in the background of numerous Computerphile videos, but what is a hack-space? We asked 'Fire-pong' and 'Lase...

Secure Copy is flawed, and the flaw goes back over 30 years. Dr Steve Bagley explains just how 'secure' it is. https://www.facebook.com/computerphile https:/...

Netflix's interactive film 'Black Mirror: Bandersnatch' included an Easter Egg. Dr Bagley uses it to explain how computers used to store data on audio casset...

Why some numbers just dont work when you're creating error proof codes. Professor Brailsford continues with the story of ISBN. https://www.facebook.com/compu...

Moving on from crude error correction to more sophisticated methods, Professor Brailsford demostrates using the ISBN 'book code'. Error Correction: https://w...

After the multi-processor video we look at processors that are central-ish.... Dr Steve Bagley takes apart the old IBM PC. EXTRA BITS: https://youtu.be/06bGC...

How do image processing apps and realtime applications apply effects so quickly? Dr Mike Pound decides to blur his Christmas Tree... Mike's code: http://GitH...

For the past year, we've been asking this as a sound-check question. Here are the results! Professor Graham Hutton (Haskell) Joseph Best (BBC Basic) David CX...

We take multithreaded code for granted, but what's needed to make it work properly? We need two Dr Steve Bagleys to illustrate this! https://www.facebook.com...

Analysing big data stored on a cluster is not easy. Spark allows you to do so much more than just MapReduce. Rebecca Tickle takes us through some code. https...

Just what does it mean to have a multi-processor system? Dr Steve Bagley on symmetric and assymmetric multi-processor systems. https://www.facebook.com/compu...

Peforming operations in parallel on big data. Rebecca Tickle explains MapReduce. https://www.facebook.com/computerphile https://twitter.com/computer_phile Th...

After our password cracking video people wanted to see "Beast" the machine Mike used. The team have been improving the setup though... Joe Best and Aaron Jac...

How does instant messaging encryption protect against attack? Dr Mike Pound on the double ratchet. Diffie Hellman Key Exchange Explained: https://youtu.be/Nm...

Byte ordering, or boiled egg orientation, endianness is important! Dr Steve Bagley on the computer science topic named after something from an 18th century n...

How do instant message apps do end to end encryption when one phone may not even be switched on yet? Dr Mike Pound on the Signal protocol at the core of most...

The Port Smash exploits Hyperthreading and timings to work out what other programs are doing. Dr Steve Bagley looks at how. Spectre & Meltdown: https://youtu...

Infinite data structures sound impossible. Professor Graham Hutton shows how laziness can win them over. EXTRA BITS: https://youtu.be/yCyBdeJmHM0 https://www...

Unlocking a phone with a face? Why doesn't the phone need thousands of example pictures before it works? Dr Mike Pound explains how it might work... Face Det...

One line of code can get root access on many Linux systems. Dr Steve Bagley demos the exploit. More info from The Register (updated link): https://bit.ly/2AA...

Professor Brailsford rounds up the whole Colossus affair, and explains how Turing actually played a small but significant part in Bill Tutte's work. Colossus...

Deep learning is used for everything these days, but this face detection algorithm is so neat its still in use today. Dr Mike Pound on the Viola/Jones algori...

With reports about doctored server motherboards, Dr Steve Bagley on what's to be gained by adding chips to a motherboard. What Happens When I Press a Key: ht...

Lorraine Underwood created this 3D light cube and shows it around the UK and Ireland. Electromagnetic Field is a non-profit UK camping festival for those wit...

Ian Hayles shows us Reach Robotics' Mekamon battle robot. Electromagnetic Field is a non-profit UK camping festival for those with an inquisitive mind or an ...

Continuing to address the challenges of AI safety, Rob Miles discusses a paper from the Machine Intelligence Research Institute (MIRI). Read the paper for yo...

EMF camp prides itself on it's connectivity - but how do you connect hundreds of campers to high speed internet when even the phone signal is patchy? DavidC ...

Have we hit pause on progress? Talking "Tech Stasis" with Science and Tech journalist Charles Arthur. More about Charles from his blog, The Overspill : https...

EMF Festival hosts all kinds of projects. Sarah Spencer's star map is a web-linked interactive star map created with a robot arm on a hacked knitting machine...

Thanks for sponsoring this video, Audible! To start your free 30 day trial and receive a free audiobook visit https://www.audible.com/computerphile or text c...

The MiMu electronic glove musical instrument inspired Helen Leigh to create a kids version; the MiniMu - We caught up with her at EMF Camp. Find out more abo...

Cracking the code was only half the battle. To keep the upper hand, when using Bill Tutte's statistical methods, the detailed counting had to be automated - ...

The Electromagnetic Field Festival (EMF Camp) happens every two years - as an event for makers and those interested in tech, their conference badges are a bi...

A laser-cut Music Box. Ian from Nottingham Hackspace shows us his EMF2018 Project, which uses electronic MIDI music converted to paper tape... EMF GSM Phone ...

Professor Brailsford returns to the subject of why Colossus was built. The professor's notes: http://www.eprg.org/computerphile/lorenz-combined.pdf Bletchley...

Does driverless technology have a place in public transport? These guys at Aurrigo think so. Tom Sheridan tells us more. https://www.facebook.com/computerphi...

Standard progamming #INCLUDEs libraries - but how do they work? Dr Steve Bagley links us to the details. What Happend When I Press a Key:https://youtu.be/ewE...

Originally developed for Swedish Special Forces, the Omnideck could be heading to an arcade near you! Martin Pett of the Transport Systems Catapult showed us...

Once you've pressed a key on the keyboard and the signal gets to the computer, what happens next? Dr Steve Bagley on the software side of a key-press. Key Pr...

Just what happens when you hit a key on a computer's keyboard? Dr Steve Bagley takes us on the keypress' journey.... Watch Part 2 Now: https://youtu.be/AcZrS...

Following on from our look at the history of CP/M, Spencer takes us through using it. CP/M History film: https://youtu.be/XtnES6HnUL8 More about Spencer and ...

Mobility isn't just about cars with autopilot, The Transport Systems Catapult in the UK has been looking at automated pod vehicles. Senior Technologist Rebec...

CP/M was the first microcomputer OS, yet it lost out to DOS and never recovered the ground. Spencer Owen explains EXTRA BITS - Using CP/M: Coming Soon! Where...

https://www.facebook.com/computerphile https://twitter.com/computer_phile This video was filmed and edited by Sean Riley. Computer Science at the University ...

Watch Part 3: https://youtu.be/E6vtRm5M8I0 https://www.facebook.com/computerphile https://twitter.com/computer_phile This video was filmed and edited by Sean...

Hear Brian Kernighan on how he got into programming, the successors of C and the biggest challenges... Watch Part 2 before it's live!: https://youtu.be/VVpRj...

Why does my neighbour hear the score in the big game before I do? Dr Steve Bagley looks at why video streams suffer delays. The Interlaced Video Problem: htt...

Ever wondered how mining operations work? Rob Morley from ORmining showed us around their setup. https://www.facebook.com/computerphile https://twitter.com/c...

Commonly used grep was written overnight, but why and how did it get its name? Professor Brian Kernighan explains. EXTRA BITS: https://youtu.be/bSaBe6WiC2s I...

Machine Learning has allowed nano-scientists to Autofocus their equipment for the first time - at an atomic level. Professor Moriarty on the paper he wishes ...

Double it and Dabble where required - The neat trick that turns pure binary into binary coded decimal. Professor Brailsford performs the magic! The Professor...

Crypto-jacking or Drive-By Mining is the process of embedding cryptocurrency mining code in a website. Dr Mike Pound tries it out. Cookie Stealing: https://y...

Just how do you go from a binary number to a printed out numeric character? Professor Brailsford takes us through Binary Coded Decimal IBM, EBCDIC & a Meg-in...

Computations involved in mining Bitcoin are astronomical. Professor Phil Moriarty explains how estimating the energy useage is a Fermi problem. The paper Phi...

When a Bitcoin Miner Mines, what is happening? Dr Mike Pound exposes the process.. note: at 3:39 Mike mentions a Bitcoin is mined every ten minutes when it i...

Deep Learning continued - the Encoder-Decoder network - Dr Mike Pound. For a background on CNNs it's worth watching this first: https://youtu.be/py5byOOHZM8 ...

Deep Learning with Convolutional Neural Networks - Dr Mike Pound explains. CNN background: https://youtu.be/py5byOOHZM8 Onion Routing (TOR): https://youtu.be...

Just what can you do with a quantum computer? Robert Smith of Rigetti Computing takes us through his quantum instruction set. EXTRA BITS: https://youtu.be/Xt...

Where are we at with Quantum computing? Robert Smith (of Rigetti Computing) explains that we're in the EDSAC/ENIAC era.... see follow up video for more techn...

See the Steve and Sir Martyn playing the game on our chemistry channel (Periodic Videos): https://youtu.be/cylNiU0mmHg Links to the games (on emulator or for...

Using Hello World to show how assemblers keep track of memory - but at the expense of two passes through the computer. Bootstrapping EDSAC: Initial Orders: h...

Why are code and data so separate? Robert Smith of Rigetti Quantum Computing explains how he uses Lisp code to generate Lisp data which he can use as Lisp co...

Quantum computing is so new it needs a flexible language for programming - Robert Smith of Rigetti Quantum Computing explains why he uses this 60 yr old lang...

Sponsored by Wix Code: Check them out here: http://wix.com/go/computerphile A safe place to try out AI algorithms, gridworlds are a standardised testing grou...

Remembering when IBM were the biggest computer company in the world. Professor Brailsford on EBCDIC and the 'Meg in a Box' Rob Miles on AI Gridworlds: COMING...

DEC's legendary PDP-11 lives on in Aaron's collection. In memory of Marc Grenville-Cleave, who helped restore this machine. https://www.facebook.com/computer...

Why do we have 8 bits in a byte? Professor Brailsford on the origins of the humble byte. Why Use Binary?: https://youtu.be/thrx3SBEpL8 Babbage's Puzzle: http...

Delving into the arcane world ofcode for Atari 2600 VCS - programming one of the first Video Game Consoles - here's Dr Steve Bagley Sega Genesis/Megadrive Pr...

Professor Brailsford on why Goto is frowned upon, and yes, we didn't mention Dijkstra this time. Note - the Japanese characters for Eiichi Goto's name should...

Continuing our look at historic computers that feature in the book Ready Player One, Jason from Centre for Computing History shows us the TRS80 Centre for Co...

With data leaks becoming common, people are concerned about protecting their own privacy. Kate Green held an open yet private session to educate others about...

Bitcoin shouldn't be regulated because it works like cash. Professor Ross Anderson of University of Cambridge on why Bitcoin isn't cash. Tracing Stolen Bitco...

The iconic Atari 2600 VCS inspired a generation of gamers. Jason Fitzpatrick from the Centre for Computing History on arguably the worlds' first console. EXT...

Continuing to look at the limits of computing, Professor Moriarty on the grand idea of computing at the atomic level. Sixty Symbols Video: https://youtu.be/g...

A teenager in his bedroom playing Global Thermonuclear War 'online' via his IMSAI 8080 in the classic movie War Games - Jason from the Centre for Computing H...

When bitcoin is spent, remainders are re-encoded & combined - how do you separate out any ill-gotten gains from the legitimate hard-earned lucre? Outlining h...

If you're not the customer you are the product. Dr Max Wilson on the third party apps embedded in social media. EXTRA BITS: https://youtu.be/ZAHA1MYudvo Trac...

Thermal imaging to determine how difficult a task is - it comes down to 'nose temperature!' - Adrian Marinescu explains. EXTRA BITS: https://youtu.be/TFYZrcO...

How does Hollywood recreate historical computing environments? With help from people like Jason at the Centre for Computing History. Ready Player One Series:...

The simple task of turning a screen red takes on new complications when you have no graphics libraries and no drivers - Assembly coding for the Sega Megadriv...

How did early computers like EDSAC deal with programs? Professor Brailsford on the code David Wheeler wrote to make people's life easier. Our special thanks ...

Nearing completion, Matt's baby, Tanglewood, for Sega's veteran console, is being written purely in assembler - we caught up with him and the game a year on....

Play around with one of the first Von Neumann machines (well, in simulation!) Professor Brailsford shows us what EDSAC was capable of... Our special thanks g...

The back door that may not be a back door... The suspicion about Dual_EC_DRBG - The Dual Elliptic Curve Deterministic Random Bit Generator - with Dr Mike Pou...

Von Neumann Architecture is how nearly all computers are built, but who was John Von Neumann and where did the architecture come from? Professor Brailsford t...

How do you pick a secure password that's memorable but truly random? Dr Mike Pound explains Diceware The Diceware website: http://bit.ly/c_diceware (Diceware...

Professor Brailsford returns to the Wheeler Jump (as mentioned by Doctor Bagley in the Subroutine video) https://www.facebook.com/computerphile https://twitt...

A supersized game of tetris - Dr Jim Wilson on scheduling High Performance Computing jobs and helping people get the best out of Nottingham's HPC. https://ww...

The High Performance Computing Installation at the University of Nottingham. Data Centre Operations Manager Chris Tadman shows us round. 'Quiet' chat: https:...

In the first days of the web, font choice was down to the viewer - Dr Tamir Hassan on how things developed. More about Dr Hassan http://www.tamirhassan.com/i...

Spectre and Meltdown showed up holes in the hardware implementation of CPUs, but what exactly are the exploits targetting? Dr Bagley dives into the detail. C...

Just what are elliptic curves and why use a graph shape in cryptography? Dr Mike Pound explains. Mike's myriad Diffie-Hellman videos: https://www.youtube.com...

The Compaq portable was the first IBM compatible machine and its creation inspired the AMC TV Show "Halt and Catch Fire." See more of the Centre for Computin...

A rare chance to look at the archives behind the Centre for Computing History (this is probably ten videos in one!) - thanks to Museum director Jason Fitzpat...

Spectre refers to a whole family of potential weaknesses of which Meltdown is just one. Dr Steve Bagley talks about CPU hardware design flaws on an unprecede...

Diffie Hellman has a flaw. Dr Mike Pound explains how a man in the middle could be a big problem, unless we factor it in... Public Key Cryptography: https://...

Fractals aren't just fascinating computer generated patterns, they could also be the key to future computer architecture. Professor Phil Moriarty explains. M...

Correction : as oodles of commenters have pointed out, the clock face should go from 0 to n-1. Also, worth reminding people that Mike has simplified the nota...

How do we exchange a secret key in the clear? Spoiler: We don't - Dr Mike Pound shows us exactly what happens. Mathematics bit: https://youtu.be/Yjrfm_oRO0w ...

How do Bluetooth devices maintain audio/video sync? Dr Steve Bagley on the subtleties of sync. Net Neutrality: https://youtu.be/SC-7fyBfvsw Diffie Hellman: C...

What's being done to stop criminals in online banking? Dr Steven Murdoch (Principal Research Fellow) in the UCL Info Security Group. EXTRA BITS: https://yout...

Keeping data anonymous seems easy, but keeping identities separate is a big problem. Professor Derek McAuley explains. EXTRA BITS: https://youtu.be/4D6OO9zyA...

Malware comes in many shapes and sizes, here's an overview of how some of it works. Enrico Mariconti is part of the UCL Security group. UCL Link: http://bit....

The current debate about Net Neutrality may not be as clear cut as you'd imagine. Professor Derek McAuley lays out the details. https://www.facebook.com/comp...

Monads sound scary, but Professor Graham Hutton breaks down how handy they can be. https://www.facebook.com/computerphile https://twitter.com/computer_phile ...

MIDI is still going strong after 34 years - Where is it used and how does it work? We asked David Domminney Fowler, Musician, Producer and Coder. Correction:...

Discussing Bitcoin scaling - Mustafa Al-Bassam of the UCL Security group talks about on-chain and off-Chain ideas. UCL Link: http://bit.ly/C_UCL-people EXTRA...

Sinclair computers (Timex in the US) was born out of a little known kit machine produced by 'Science of Cambridge' - Jason Fitzpatrick is from the Centre for...

In 1991 the web could only do text, but scientists at Cambridge Computer Laboratory were working with networked video.... Quentin Stafford-Fraser explains ho...

How do you prove something without giving away all your data? Zero Knowledge Proofs could hold the answer. Alberto Sonnino, Research Student at UCL explains....

Just how far can we go with processing speed? Physicist Professor Phil Moriarty talks about the hard limits of computing. Technical physics (aside) video: ht...

Scaling up blockchains is far from simple - Dr Shehar Bano of the Information Security Group at UCL dicusses some of the problems. UCL Link: http://bit.ly/C_...

What's going on when we search for *.docx? Dr Steve Bagley talks us through wild cards. EXTRA BITS: https://youtu.be/M-yJYfvZRv8 http://www.facebook.com/comp...

Artificial Intelligence where neural nets play against each other and improve enough to generate something new. Rob Miles explains GANs One of the papers Rob...

Secure WiFi is broken - Dr Mike Pound & Dr Steve Bagley on the Krack Attack discovered by researchers in Belgium. Mike's description of crib dragging relates...

Discussing Homotopy Type Theory with Professor Thorsten Altenkirch. Main Vladimir Voevodsky Video: https://youtu.be/v5a5BYZwRx8 http://www.facebook.com/compu...

A true essential, the subroutine saves time, effort and helps avoid bugs. Dr Bagley explains why he has two essentials! Essentials: Hidden Pointers: https://...

Voevodsky took his knowledge of abstract geometry and applied it to Computer Science, then took Computer Science principles and applied them to Mathematics. ...

Generating YouTube comments with a neural network trained on YouTube comments. What could possibly go wrong? Dr Mike Pound replied to our comment... EXTRA BI...

Pointers are an essential element of computing. Dr Steve Bagley explains how everything rests on pointers. Password Cracking: https://youtu.be/7U-RbOKanYs Lo...

Mathematics once again meets Computer Science as Professor Altenkirch continues to discuss Type Theory Thanks to Lily the dog! http://www.facebook.com/comput...

Programming loops are great, but there's a point where they aren't enough. Professor Brailsford explains. EXTRA BITS: https://youtu.be/DVG5G1V8Zx0 The Most D...

Converting a single 2D photo into a 3D model of your face. Convolutional Neural Networks are clever things. Aaron Jackson is part of the Computer Vision Labo...

Discussing how Social Media interfaces work with Dr Max Wilson. Easter Egg - The bit where Max is recorded on YouTube: https://youtu.be/G7-YPz-L3Z4 http://ww...

Cellphone providers routinely collect data from you - ‎Data science PhD researcher and hackathon enthusiast Gregor Engelmann breaks it down. Archimedes at 30...

Building blocks and strawberry laces make collaborative software design childsplay - Dr Max Wilson http://www.facebook.com/computerphile https://twitter.com/...

The 'magic' trick of pointers to pointers - Professor Brailsford explains how what might seem complicated will actually simplify your code. (See Extra Bits v...

Just what's going on when your email provider wants to send you a text message? Dr Mike Pound talks about multi-factor authentication. Password Cracking: htt...

Why is C such an influential language? We asked ardent C fan Professor Brailsford. Brian Kernighan Playlist: https://www.youtube.com/playlist?list=PLzH6n4zXu...

Bit flipping a stream cipher could help you hit the Jackpot! But not with HMAC. Dr Mike Pound explains. Correction : "pseudo" is spelled incorrectly on the g...

Pointers are fundamental in programming and Professor Brailsford couldn't live without them! Professor Brailsford's Code: http://bit.ly/Computerphile_C_Point...

Encoding recursion in the Lambda calculus, one of Professor Graham Hutton's favourite functions. Lambda Calculus: https://youtu.be/eis11j_iGMs Professor Brai...

The 'Swiss Army Knife' of data structures, Professor Brian Kernighan talks about the associative array with beer & pizza. EXTRA BITS: https://youtu.be/H8k-I4...

After seemingly insurmountable issues with Artificial General Intelligence, Rob Miles takes a look at a promising solution: Cooperative Inverse Reinforcement...

Rob Miles talks editing with GNU/Linux & free software. More from Rob Miles on his channel: http://bit.ly/Rob_Miles_YouTube http://www.facebook.com/computerp...

Facebook & fake news - Dr Stuart Moran is part of a team using eye-tracking to look at how people get conned by fake news stories. Hear from more of the team...

We ask Professor Steve Simske of HP Labs what it's like to interview for one of the big computing companies, what they're looking for and about his experienc...

Another home computer hits the big 3 0 ! But even if you've never heard of it, the Acorn Archimedes is the reason the ARM chip exists... Virus vs. Zarch: htt...

Which is faster? The results *may* just surprise you. Dr 'Heartbleed' Bagley gives us an in depth shoot-out - Arrays vs Linked Lists... Link to code can be f...

OCR isn't just about scanning documents and digitizing old books. Explaining how it can work in a practical setting is Professor Steve Simske (Honorary Profe...

It's three steps forward and two steps back as Dr Bagley continues his quest to restore the venerable Sun server... http://www.facebook.com/computerphile htt...

The iPhone is ten years old, Dr Bagley looks at life before the ubiquitous smartphone http://www.facebook.com/computerphile https://twitter.com/computer_phil...

Why can't we just disconnect a malevolent AI? Rob Miles on some of the simplistic solutions to AI safety. Out of focus shots caused by faulty camera and "slo...

Brian Kernighan, the man who wrote the definitive book on C programming brings us up to date on his work over the last couple of years. Sun Server: https://y...

Computerphile helps Dr Steve Bagley clean up the Computer Science department's Sun server from the '80s Music during 'duster buster' sequence: Split Screen b...

AI Safety isn't just Rob Miles' hobby horse, he shows us a published paper from some of the field's leading minds. More from Rob Miles on his channel: http:/...

We ask Bell Labs alumnus and 'C' expert Professor Brian Kernighan about research at Bell Labs Associative Arrays: Coming Soon 'C' Programming Language: https...

The Dark web allows users to hide services using TOR, but how? Dr Mike Pound explains. Onion Routing: https://youtu.be/QRYzre4bf7I The Perfect Code: https://...

A movie where you're deciding the edits, consciously and subconsciously. Richard Ramchurn and his brain controlled movies. More about Richard's projects: htt...

What goes on TOR stays on TOR, or so we hope. Dr Mike Pound takes us through how Onion Routing works. EXTRA BITS: https://youtu.be/6eWkdyRNfqY End to End Enc...

Recently we took an old Sun server to pieces - Dr Bagley uses it to explain how most computers connect together http://www.facebook.com/computerphile https:/...

How do you go about making a device recognise individual sounds? Audio Analytic's Dr Chris Mitchell on how they approached the problem. Digital Audio Compres...

Wanacrypt works super fast and even when you're offline. Dr Pound explains how hybrid ransomware systems work. Original Wana Decrypt0r video: https://youtu.b...

$300 or your files are toast: Dr Pound takes a look at the latest ransomware to be doing the rounds. How Wana Decrypt0r encrypts files: https://youtu.be/pLlu...

A hacked car that could kill you should be more worrying than a thousand lightbulbs taking Facebook offline. University of Cambridge's Professor Ross Anderso...

How do we control our own data while allowing it to be mined? Dr Richard Mortier of The University of Cambridge discusses some of the issues behind data harv...

How does rich audio compress to stream across the internet with little quality loss? Audio Analytic's Dr Chris Mitchell explains. Audio Analytic is a sound r...

Walk around inside a working processor and see all the components operating. Jason Fitzpatrick shows us the Centre for Computer History's MegaProcessor . Meg...

How are encryption standards constants chosen? Dr Mike Pound explains these not-so-magic numbers. http://www.facebook.com/computerphile https://twitter.com/c...

Could Smart Contracts be the end for Uber, Amazon and eBay? Blockchain technology as an escrow service, Christopher Ellis explains. http://www.facebook.com/c...

Secure Hashing Algorithm (SHA1) explained. Dr Mike Pound explains how files are used to generate seemingly random hash strings. EXTRA BITS: https://youtu.be/...

Deriving the Reed-Muller Code, used by Mariner 9 to send back pictures from Mars. Professor Brailsford shows how it can be coded recursively. EXTRA BITS: The...

NASA had to implement error correction for the spacecraft that travelled to Mars - Professor Brailsford explains how the Mariner series managed to send back ...

End to end encryption, government ministers are again talking about stopping it. What is it and why might that be a bad idea? Dr Mike Pound explains. Hololen...

Blockchain is the underlying technology behind cryptocurrencies bringing together Merkle trees, Hashing & Distributed Architecture. Christopher Ellis explain...

Bubbles in the pipeline? Some of the basic operations at the heart of the CPU explained by Dr Steve Bagley. EXTRA BITS: https://youtu.be/t_RnwTW87_Q Why CPUs...

Superb integration, but a limited field of view, Dimitri Darzentas demonstrates the incredible Microsoft Hololens. Google Tango: https://youtu.be/z1gMRZiM9RY...

Taking Augmented Reality to the next level, Google's Tango uses depth cameras and lasers. Dimitri Darzentas demonstrates. Sneak peek at next video: Microsoft...

Summing up why Hamming's error correcting codes are regarded as 'Perfect' - Professor Brailsford explains. EXTRA BITS: https://youtu.be/i4zC67Yf5Iw For more ...

How do you implement an on/off switch on a General Artificial Intelligence? Rob Miles explains the perils. Part 1: https://www.youtube.com/watch?v=4l7Is6vOAO...

Part 1 of a Series on AI Safety Research with Rob Miles. Rob heads away from his 'Killer Stamp Collector' example to find a more concrete example of the prob...

Putting search algorithms into practice. Dr Mike Pound reveals he likes nothing more in his spare time, than sitting in front of the TV coding. EXTRA BITS: h...

The powers of two and the algorithm that helps them correct errors. Professor Brailsford explains how to fix those one-bit blips. EXTRA BITS: https://youtu.b...

Using Optical Flow to position augmented reality content above wargaming scenes. Dimitri Darzentas is a Horizon CDT PhD student & member of the Mixed Reality...

Improving on Dijkstra, A* takes into account the direction of your goal. Dr Mike Pound explains. Correction: At 8min 38secs 'D' should, of course, be 14 not ...

Turning exquisitely painted miniatures into high definition 3d models using a camera and a turntable. Dimitri Darzentas is a Horizon CDT PhD student & member...

As communications become more complicated, the amount of bits required to succesfully correct an error increases, but by how much? Professor Brailsford talks...

Bringing digital into interactive theatre. Roma Patel is a designer and member of the Mixed Reality Laboratory who is looking to computing to provide extra e...

Dicussing implementation with Professor Brailsford. Professor Brailsford emailed me after we recorded this to say that of course he should have discussed pro...

The basis of almost all functional programming, Professor Graham Hutton explains Lambda Calculus. http://www.facebook.com/computerphile https://twitter.com/c...

Characteristically ahead of his time, Clive Sinclair built his version of the iPad, back in the late '80's. Spencer shows us his "Cambridge Computer" Z88. Sp...

Linked Lists explained: Dr Alex Pinkney returns to Computerphile. Apologies for the traffic noise on this episode - we tried filming outside in London which ...

The original version of text messaging had a flaw, but how can we investigate problems with software quickly and easily? Professor John Hughes shows us how a...

In day to day life interruptions are annoying, but in computing they're essential. James Fowkes explains using an Arduino. EXTRA BITS: https://youtu.be/c88s-...

As computers are used more and more to confirm proofs, is it time to take computer science's contribution to mathematics further? Dr Thorsten Altenkirch disc...

Functional Programming is often considered the stuffy tool of academics, but can it be used for creative and entertainment applications? Dr Henrik Nilsson de...

Dijkstra's Algorithm finds the shortest path between two points. Dr Mike Pound explains how it works. How Sat Nav Works: https://youtu.be/EUrU1y5is3Y Slow Lo...

Discussing web links with Dr Tim Brailsford. Origins of the Web (Hypertext History): https://youtu.be/b0O3rsKjSOs Sega Retro Game Coding: https://youtu.be/GH...

They starting coding aged 12 on the family TV and turned their passion into a big business. From Robin Hood to Chicken Run, the list of videogames is Dizzyin...

Ada Lovelace became known as the world's first computer programmer - Professor Brailsford on how being poet Byron's daughter inadvertently sent her down a sc...

Just how do you turn basic number crunching into a physics system for gaming? Video Games programmer Matt Phillips explains. More info on Matt's Project: htt...

Lazy eyes have been treated the same way for a hundred years. These guys have developed a system of computer games that may replace the humble eye patch. Dr ...

Professor Brailsford discusses Charles Babbage, the genius behind the Analytical Engine. The Professor's notes: http://www.eprg.org/computerphile/new-adatalk...

Audible 30 day free trial: http://www.audible.com/computerphile Coding an entire game in assembler. Matt Phillips is creating a brand new game for a 25 year ...

Just what is functional programming? We asked a member of the team that created Haskell: John Hughes, Professor of Computer Science at Chalmers University of...

The web didn't spring out of nothing. People had been considering & building hypertext type systems since the 40's. Dr Tim Brailsford (no relation to Profess...

Scaling images is usually smoother using bicubic interpolation. Dr Mike Pound explains why. More on bicubic: http://bit.ly/Computerphile_bicubic1 Wikipedia b...

Two different sorting algorithms are actually the same. Professor Graham Hutton explains. Note from Professor Hutton: It's great to see all the discussions h...

Charles Babbage's Analytical Engine was designed as the first Turing complete computer - before Turing was even born. Sadly it was never built. Professor Bra...

Quantum Computing offers a potential sea-change in computer power, but what are the issues with it, why aren't we all using quantum iphones already? Associat...

Denial of service usually relies on a flood of data. Slow Loris takes a more elegant approach, and almost bores a server to death. Dr Mike Pound explains. Cr...

Audible 30 Day Free Trial: http://www.audible.com/computerphile Dash and Bash is a videogame where you have to get physical to win. Alistair Aitcheson explai...

A security exploit using standard Windows commands which can lie undetected. Dr Steve Bagley explains the latest revealed exploit. Password Cracking: https:/...

Dirty Cow is a serious security flaw. Dr Steve Bagley takes us through the details. http://www.facebook.com/computerphile https://twitter.com/computer_phile ...

Dirty Cow has been there for years, and it affects all kinds of devices. Dr Steve Bagley demostrates how dangerous it is. Why Dirty Cow Works: https://youtu....

How can a file take up no space on disk? Dr Steve Bagley explains how '0' size files can exist. Magnetic Media (Floppies & Tapes) https://youtu.be/cWKo_dMUw7...

Often described as the UK's answer to Steve Jobs, Clive Sinclair created a strong brand and his ground-breaking products and their low prices helped the UK's...

Not enough just to crunch numbers in Air Traffic Control, you have to be able to display those numbers. John Linfield takes us through the kit. Corrective Co...

Audible 30 Day Free Trial: http://www.audible.com/computerphile How computers helped revolutionise the way aircraft traffic is managed. John Linford, Chairma...

An Ambitious project to recreate the Domesday book for the modern age, but already the machinery is obsolete. Roger Moore talks us through the BBC Domesday s...

To Conclude Professor Brailsford's series on PDF he discusses how PDFs are created. PDF, what is it for? : https://youtu.be/48tFB_sjHgY Programming in Post S...

The IBM PC running DOS set a new standard for Personal Computing but IBM lost control, Dr Steve Bagley explains where it started. Password Cracking: https://...

We all rely on sat nav systems, but how do they work? Here to discuss is Steve Fuller of GRACE (Geospatial Research and Applications Centre of Excellence) at...

Postscript took off like a rocket but PDF took its time, many people wondering "What's it for?" Professor Brailsford's experience with one such person - a US...

K-means sorts data based on averages. Dr Mike Pound explains how it works. Fire Pong in Detail: https://youtu.be/ZoZMMg1r_Oc Deep Dream: https://youtu.be/BsS...

The famous computer game Pong re-imagined as a visceral fiery experience. Matthew and Ian built 'Rule Zero' for EMF camp, most people call it 'Fire Pong' Thi...

The famous computer game Pong re-imagined as a visceral fiery experience. Matthew and Ian built 'Rule Zero' for EMF camp, most people call it 'Fire Pong' Fir...

Nearest Neighbour and BiLinear resize explained by Dr Mike Pound Fire Pong: https://youtu.be/T6EBe_5LxO8 Google Deep Dream: https://youtu.be/BsSmBPmPeYQ FPS ...

Steve Jobs demoed the Apple Laserwriter only after John Warnock had massaged the code. Professor Brailsford explains that if you need speed it can be worth d...

Surreal images created by Google's Deep Dream code flooded the internet in 2015 but how does deep dream do it? Image analyst Dr Mike Pound. Inside a Neural N...

What's in a name badge? Well in this case a microprocessor, LCD display, Gyro, WiFi and all sorts of things. Rob Miles discusses the Electromagnetic Field 20...

You can't beat physics. Why the chip manufacturers are heading for a wall. We asked nano-scientist Phil Moriarty Professor of Physics in the School of Physic...

Why do computers have such a hard time showing TV footage? Dr Steve Bagley unlaces the problem. WARNING There is a short sequence in this film with flashing ...

50p, 60p, 25p, not UK prices, but frame rates, but what are frame rates? Dr Steve Bagley explains why digital video looks different at different FPS. Problem...

Audible 30 day free Trial: http://www.audible.com/computerphile Get your soldering iron out and build your own 1970's home computer! Spencer takes us through...

Mobile apps almost always use a 'stop to interact' model, Dr Joe Marshall takes us through the design problems of mobile interfaces. n.b. This was filmed bef...

Bletchley Park was dilapidated and running out of money. Dr Sue Black campaigned to save Bletchley, and to tell the story of the people who worked there. Mor...

The game that shows people how games are made. Alex is an engineer at the National Videogame Arcade in Nottingham. Password Cracking: https://youtu.be/7U-RbO...

How do you pick the perfect password? Is it as simple as XKCD make out, or is there more to it? Dr Mike Pound follows on from his password cracking video. Pa...

NOTE : if you know how the Pokémon game works skip to 4 mins in. CORRECTION : Richard refers to 750 Pokémon being available,he confused total Pokémon (722 ac...

'Beast' cracks billions of passwords a second, Dr Mike Pound demonstrates why you should probably change your passwords... Please note,at one point during th...

Audible 30 day free Trial: http://www.audible.com/computerphile Games to play, games to create, games to help shape, the National Video Arcade sets out to be...

What does it mean for something to be Turing Complete? Professor Brailsford explains. Turing Machine Primer: https://youtu.be/DILF8usqp7M Turing Machines Exp...

Just what is happening inside a Convolutional Neural Network? Dr Mike Pound shows us the images in between the input and the result. How Blurs & Filters Work...

The professor took a lot of stick for calling HTML a programming language - here he shows why it can be described as a language, albeit a special purpose one...

Do we only see what we want to see in our Social Media feeds? Dr Max Wilson talks about the social media bubble and how elections and referenda aren't swayed...

Deep and Dark web are often getting confused - Dr Max Wilson untangles the difference. Web vs Internet (Deep Dark Web pt1): https://www.youtube.com/watch?v=o...

To explain the deep web and the dark web, first we lay out the basic difference between The Internet and the World Wide Web. Dr Max Wilson explains Rob Miles...

Just how bad is it if your site is vulnerable to an SQL Injection? Dr Mike Pound shows us how they work. Cookie Stealing: https://youtu.be/T1QEs3mdJoc Rob Mi...

Early home computing often involved soldering your machine together and fighting for time on the family TV. Jason Fitzpatrick, Director of The Centre for Com...

Steve Wozniak got creative with the Apple ][ floppy drive, creating a system that used less complicated hardware and was cheaper, accomplishing much in softw...

Audible 30 day free Trial: http://www.audible.com/computerphile Software Defined Networking takes the control away from basic protocols and gives it to the p...

Cookie Monster isn't the only one fond of cookies - thieves on the Internet are partial too. Dr Mike Pound demonstrates & explains the art of cookie stealing...

The ultimate example of trouble from digital promiscuity. HTML is more tolerant than C because it has to be. Professor Brailsford explains. Deep Learning: ht...

Before flash memory became commonplace, people relied heavily on floppy disks to store their data. Dr Steve Bagley takes us through the basics of magnetic me...

Years of work down the drain, the convolutional neural network is a step change in image classification accuracy. Image Analyst Dr Mike Pound explains what i...

Conductive Ink, Colour Shifting Ink and clever printing algorithms are used as anti-counterfeiting measures, HP Labs' Steve Simske is an Honorary Professor a...

Removing voxels until the shape emerges. Space Carving is a kind of virtual sculpture. Image Analyst Dr Mike Pound explains how though it's a bit rough and r...

Audible 30 day free Trial: http://www.audible.com/computerphile Variable Data Printing (VDP) allows industrial printers to vary details on bulk print runs - ...

There's no central control over the internet, networks have to work together. Dr Tim Griffin of the University of Cambridge & formerly Bell Labs explains why...

A follow up chat related to Professor Brailsford's HTML videos. HTML playlist: http://www.facebook.com/computerphile https://twitter.com/computer_phile This ...

The Democracy of computer collaboration, PAXOS is a method for ensuring networked computers reach agreement. Heidi Howard of the University of Cambridge Comp...

SGML 'theologians' were at war with Internet browser 'pragmatists' after Sir Tim Berners-Lee released HTML on the world. Professor Brailsford watched it happ...

Google, Facebook & Amazon all use deep learning methods, but how does it work? Research Fellow & Deep Learning Expert Brais Martinez explains. EXTRA BITS fro...

Governments can censor access to the web, but how do they restrict access? Sheharbano Khattak, Research Assistant at the University of Cambridge Computer Lab...

Why all the confusion, surely SGML, HTML & XML are just different versions of the same thing? Professor Brailsford on the perils of '*ML' Problems with Omitt...

A bit more from of our interview with app developer Marco Arment - who also moonlights as a podcaster and "controversial blogger?" More videos from this inte...

Marco Arment, among other things, is the developer of the Overcast podcast app. Audible: http://www.audible.com/computerphile More videos from this interview...

Continuing our chat with web and iPhone software developer Marco Arment - checking out his desk and equipment... More videos from this interview (and more co...

Marco Arment made his name developing Tumblr but is now an independent app developer and technology commentator. He works mainly on web and iPhone software. ...

Also known as "Zombie Armies", what exactly are botnets? Sheharbano Khattak of the University of Cambridge Computer Lab explains. http://www.facebook.com/com...

AlphaGo is beating humans at Go - What's the big deal? Rob Miles explains what AI has to do to play a game. What on Earth is Recursion?: https://youtu.be/Mv9...

Websites & https what difference does the "s" make anyway? - Dr Richard Mortier of the University of Cambridge Computer Laboratory explains. Follow the Cooki...

AlphaGo beat the Go World Champion 4-1. Why do the creators not know how? Brais Martinez is a Research Fellow & Deep Learning expert at the University of Not...

Using Pong to demonstrate the strengths of Object Oriented Programming. Dr Steve Bagley explains The Singularity & Friendly AI: https://youtu.be/uA9mxq3gneE ...

Virtual Reality is once again in fashion, devices like Oculus Rift & Hololens push VR & AR into the spotlight, Professor Steve Benford explains the concept o...

Should Apple unlock a terrorists iPhone for the FBI? Professor Ross Anderson explains how this is a "Pandora's Box" situation. Buffer Overflow Attacks: https...

Making yourself the all-powerful "Root" super-user on a computer using a buffer overflow attack. Assistant Professor Dr Mike Pound details how it's done. The...

If you've wondered how computer scientists use pairs of cameras to reconstruct a 3D scene, Image Analyst & Lecturer Dr Mike Pound explains. EXTRA BITS: https...

Building a chip for a smartphone or tablet, where do you start? ARM's Jem Davies talks about the 'horse trading.' CPU vs GPU: https://youtu.be/_cyVDoyI6NE St...

This Lego drone has a mind of its own (kind of) - Luke Geeson shows us a Lego Mindstorm car hacked together with a Raspberry Pi. AI Safety: https://youtu.be/...

Bitcoin may be doomed to failure as the blockchain struggles to scale up; Professor Ross Anderson from the University of Cambridge explains. EXTRA BITS - Bit...

Finite State Automata meets Recursion. Professor Brailsford continues the story of computers without memory. State Machines versus Chomsky Type 3 Chomsky's H...

Thanks to Audible for supporting our channel. Get a free 30 day trial at http://www.audible.com/Computerphile Creating 3D models with an Octocopter, a camera...

Safety in AI is important, but more important is to work it out before working out the AI itself. Rob Miles on AI safety. Brain Scanner: https://youtu.be/TQ0...

Where did 'Angle Brackets' or 'Pointy Brackets' come from? Professor Brailsford explains some of the essential notation for Computer Science. ARM on Hardware...

RISC processors kept things simple, but when do you need to make your hardware more complicated and when can you leave it to the software? We asked ARM's Jem...

Off the peg digital cameras that digitize prehistoric rock art and turn them into huge 3D point clouds. Axel Pinz explains the 3D Pitoti Scanner. Brain Scann...

They're called 'Finite State Automata" and occupy the centre of Chomsky's Hierarchy - Professor Brailsford explains the ultimate single purpose computer. Not...

ARM technology dominates mobile processors, but how, when they don't actually make chips? Jem Davies from ARM explains. $5 Computer – Raspberry Pi Zero: http...

Uncomputable through to finite state - Professor Brailsford explains Chomsky's hierarchy. Turing and the Halting Problem: https://youtu.be/macM_MtS_w4 "Most ...

Thanks to Audible for supporting our channel. Get a free 30 day trial at http://www.audible.com/Computerphile A short jumble of letters & symbols that plays ...

Using a Brain Scanner to monitor 'Human CPU load'? Horia Maior shows us how it works. Fitts's Law: https://youtu.be/E3gS9tjACwU CPU vs GPU: https://youtu.be/...

A search engine can return thousands of web pages, but how does it know whether they are relevant or not? First step is how to measure relevance, as Dr Max W...

What does a GPU do differently to a CPU and why don't we use them for everything? First of a series from Jem Davies, VP of Technology at ARM. Floating Point ...

A camera that uses a micro lens array to create a depth map. Dr Mike Pound explains a more expensive type of light-field camera used in industry. Gesture Con...

Before each Computerphile interview we asked guests and regular contributors about their first computer. Professor Uwe Aickelin: Missing Data: https://youtu....

Digital currency, how does it work, what's a data miner and will Bitcoin last? We asked Professor Ross Anderson of the University of Cambridge Computer Labor...

Surely decimal numbers are easier to understand than binary? So why don't computers use them? Professor Brailsford explains the relationships between binary,...

A $5 computer - where's the catch? Well, there doesn't seem to be one. Dr Steve "Heartbleed" Bagley explains the Raspberry Pi Zero. Chip & PIN Fraud: https:/...

Shoot first, focus later: How does a 'light field' camera work? We asked Image Analyst Dr Mike Pound. The Bayer Filter: https://youtu.be/LWxu4rkZBLw The Prob...

A Picture says a thousand words, but even more musical notes! - David Domminney Fowler wrote a program that turns images into music. Dave's Blog & Pixel Nois...

We've all heard of web browser caches, but why does a super fast modern CPU need a cache? Because it's too fast. Dr Steve "Heartbleed" Bagley explains. Profe...

DFB explains why three letter abbreviations are so common in computer science. Unix & Bell Labs have a lot to answer for! (Professor David F Brailsford) Enig...

Just what is a pipeline in the computer science sense? We asked Computer Science guru Professor Brian Kernighan Why Asimov's Laws of Robotics Don't Work: htt...

Taking edges one step further with Hysteresis Thresholding - The Canny Operator explained by Image Analyst Dr Mike Pound Finding the Edges (Sobel Operator): ...

Audible Free Book: http://www.audible.com/computerphile Three or four laws to make robots and AI safe - should be simple right? Rob Miles on why these simple...

Our eyes can spot edges with no problems, but how do computers determine what's an edge and what's not? Image Analyst Dr Mike Pound explains the Sobel Edge d...

Just like humans organising to meet for coffee, computers need ways of organising themselves. Heidi Howard, of the System Research Group at University of Cam...

Learn how to add narration to your Kindle eBooks. Visit http://www.amazon.com/computerphile How does digital audio work? Programmer, Producer and Professiona...

Lenovo sold thousands of computers all carrying the Superfish software. Tom Scott explains what a security nightmare this became. More Tom Scott: http://www....

Face detection isn't just about geometry. Associate Professor Dr Michel Valstar explains how Local Binary Patterns can be used to detect the edges in our fea...

Big data research needs high performance computing and fast networks but so do thousands of students watching Netflix. Jisc run Janet, the network that conne...

We rely on Chip & PIN machines to pay for things in a safe way, so how are they being compromised? Ross Anderson is Professor of Security Engineering at the ...

Software doesn't deal well with missing data, so what can be done about it? Professor Uwe Aickelin talks about whether we need to replace it. Known Unknowns:...

A Computerphile viewer asked the question: Why do we need IP addresses when every network interface has its own Mac address? - I put it to Dr Richard Mortier...

Image filters make most people think of Instagram or Camera Phone apps, but what's really going on at pixel level? Image Analyst Dr Mike Pound explains some ...

BWK, Professor Brian Kernighan visited Nottingham, so Professor Brailsford couldn't resist an 'on-camera' chat about Unix, Bell Labs and other aspects of Bri...

"Google It" has passed into common language, but how does Google rank pages? Dr Max Wilson explains page rank. How Search Engines Treat Data: https://youtu.b...

How getting something completely wrong can actually help you out. Professor Uwe Aickelin explains anti-learning. Could We Ban Encryption?: https://youtu.be/S...

XOR encryption is flawed. Professor Brailsford explains the zig-zag method that can reveal the precious key stream. Fishy Codes – Bletchley's Other Secret: h...

Before and After - how a data centre looks before the clients move in. Spencer Lamb shows us around. EXTRA BITS: https://youtu.be/an_-lxUjfeg Original 'Insid...

Inside one of the mysterious buildings that holds petabytes of data and crunches big numbers. Spencer Lamb shows us around a purpose built data centre in Slo...

Audible free book: http://www.audible.com/computerphile What is the singularity and will it ever happen? Dr Sean Holden of the University of Cambridge explai...

We haven't got time to label things, so can we let the computers work it out for themselves? Professor Uwe Aickelin explains supervised and un-supervised met...

How faces are turned into points & shapes and recognised as features. Associate Professor Dr. Michel Valstar explains how pixels 'vote' for features. Silicon...

The Human Brain Project is behind this attempt to build a million core brain simulator. Professor Steve Furber of the University of Manchester & one of the p...

Email is an unwelcome distraction, so CS legend Don Knuth simply doesn't use it. He hasn't done since 1990. Brady asked him why. Secrets Hidden in Images (St...

"C" is one of the most widely used programming languages of all time. Prof Brian Kernighan wrote the book on "C", well, co-wrote it - on a visit to the Unive...

Search Engines are a bit like the Public Library - You wouldn't wander around hoping to find the book you want, there's a system in place. Data is the same -...

When your computer crashes and you lose everything it's annoying at best - What if you could fix it with blu tack? Jason Fitzpatrick from The Centre for Comp...

Secret texts buried in a picture of your dog? Image Analyst Dr. Mike Pound explains the art of steganography in digital images. The Problem with JPEG: https:...

10% off at Squarespace: http://squarespace.com/computerphile Secret services want to read people's communications, politicians talk about terrorists, but wha...

Bell Labs pioneered some of the most important inventions of the 20th century, what was it like to be part of that? Professor Brian Kernighan was there. The ...

$20 off your 1st purchase at http://www.littlebits.com use the code “COMPUTERPHILE” After the deadly stamp collector, what if we can't create something so po...

An app that lets your phone fly which you can control from a smart watch. Researchers at the University of Cambridge Computer Lab have built 'Captain Buzz' -...

10% off at Squarespace: http://squarespace.com/computerphile An app that turns your phone into a pilot? Researchers at the University of Cambridge Computer L...

What computing power could businesses or educational establishments expect in the mid '60's? Jeremy Thackray demos the Elliott 903. Centre for Computing Hist...

Audible free book: http://www.audible.com/computerphile How do you use mathematics to help design a computer's user interface? Use Fitts's Law; Dr Sarah Wise...

How do computers recognise human faces? Associate Professor Dr Michel Valstar explains how the computer discerns faces, features & our expressions. EXTRA BIT...

The UK's Government Communications Headquarters deal in classified material, but how to decide if a computer is secure? - GCHQ asked Professor Uwe Aickelin a...

Hitler's High Command didn't use Enigma, they used a faster system called Lorenz, but when Allied forces first encountered it, they had no idea what it was a...

Arduino devices are well known amongst hobbyists, but how do you get them to work? James Fowkes takes us through programming a 'sketch' (Arduino-speak for a ...

10% off at Squarespace: http://squarespace.com/computerphile If not for Apple, the company making ARM processors might never have existed and ARM could have ...

One of the first computers in the world, EDSAC is being rebuilt at the National Museum of Computing at Bletchley Park. Andrew Herbert takes us on a walk arou...

The danger of assuming general artificial intelligence will be the same as human intelligence. Rob Miles explains with a simple example: The deadly stamp col...

10% off at Squarespace: http://squarespace.com/computerphile Clive Sinclair had a vision, an elegant, affordable computer. Sold as Timex 1000 in the US, the ...

Never use JPEG with text. But why? Image Analyst Mike Pound explains what goes wrong when JPEG tries to compress text. Holy Grail of AI: https://youtu.be/tlS...

Searching for the known unknown. Data mining & illegal immigration. Professor Uwe Aickelin explains how to mine data you don't even have. Nuggets of Data Gol...

An Apple I was discovered in a pile of electronics. It sold for $200,000, but why so valuable? Dr Steve Bagley talks about this seminal machine. Little Mac w...

Colossus was one of the very first electronic, special purpose, computers and it was created almost two years earlier than the better known ENIAC. We visit B...

DCT is the secret to JPEG's compression. Image Analyst Mike Pound explains how the compression works. Colourspaces: https://youtu.be/LFXN9PiOGtY JPEG 'files'...

This is a re-upload of 'The Computer that Changed Everything' with the 'near ultrasonic' (16k) audio noise removed. If you didn't hear it in the first place,...

What's inside the case of this 40yr old Altair? Jason from the Centre for Computing History opens up this early machine to find some surprising changes. Main...

Arguably the first personal computer, the Altair 8800 is the machine that inspired Steve Jobs and Bill Gates. Jason Fitzpatrick from the Centre for Computing...

Data mining, why it's better than pure statistics. Professor Uwe Aickelin explains the basics of data mining. JPEG Discrete Cosine Transform: https://youtu.b...

Video tour of the Centre for Computing History in Cambridge. Assistant Curator Jeremy shows us their vintage computers. 5 Hole Paper Tape: https://youtu.be/J...

Audible free book: http://www.audible.com/computerphile Why can't artificial intelligence do what humans can? Rob Miles talks about generality in intelligenc...

Scrapped to make space for its successor, EDSAC is now being painstakingly rebuilt at The National Museum of Computing (TNMoC). 5 years in, Andrew Herbert te...

30 years ago, Acorn Computers switched on their first ever processor, the Acorn RISC Machine, or ARM. Now, they power 95% of smartphones & 12 billion ARM chi...

JPEG Isn't a file format. Image Analyst Mike Pound explains why not in our first in a series about how JPEG works. Colourspaces: https://youtu.be/LFXN9PiOGtY...

Hobbyist hackers and programmers use Arduinos extensively - but what is an Arduino made of? James Fowkes from Nottingham Hackspace explains. Raspberry Pi Har...

Computer Memory Playlist: https://www.youtube.com/playlist?list=PLzH6n4zXuckoxFPyhsMOYMGqyZOeN2SDJ AND OR NOT – Logic Gates Explained: https://youtu.be/UvI-A...

Harry's: http://www.harrys.com/ use coupon code "COMPUTERPHILE" for $5 off What's a colourspace and why do we have different ones? It's horses for courses as...

What place do wearables have in AR? We ask AR Developer Matt Ramirez from Jisc. Capturing Digital Images (The Bayer Filter): https://youtu.be/LWxu4rkZBLw Aug...

Before floppy disks and the internet, computers transferred data to and from paper tape. Professor Brailsford explains. Punch Card Programming: https://youtu...

Extra material from our main film "Building the BBC Micro" : https://youtu.be/y4WG549i3YY http://www.facebook.com/computerphile https://twitter.com/computer_...

It inspired a generation of coders and was in 80% of UK schools. The BBC Micro was built by Acorn (CPU) as part of a computer literacy project. Professor Ste...

Augmented Reality, also known as AR is finding its way into all of our mobile devices, is it a gimmick or a useful piece of technology? Matt Ramirez is a dev...

XOR, an essential logic operation, explained by Professor Brailsford. Continues our series on logic gates/operations. AND OR NOT - Logic Gates Explained: htt...

How computers represent more than 2 dimensions and how those dimensions can be used. Our series on digital images and computer vision continues with Image An...

He was on the team that invented the ARM chip, the BBC Microcomputer and got into computing in the 1970's because he wanted to build his own flight simulator...

Audible free book: http://www.audible.com/computerphile Basic logic gates explained and all the different ways they can be drawn and represented. Professor B...

After #thedress twitter-storm about what colour a dress appears to be in a photo, we asked image analyst Mike Pound to help ink in the details. The (pink) VR...

Each BIT in memory doesn't have it's own unique wiring, they share connections - Dr 'Heartbleed' Bagley explains how we address them. Binary: Plusses & Minus...

How do digital cameras turn light into the data that computers can handle? In this second part of our computer vision series, Image Analyst Mike Pound explai...

How programmers found ways to push the hardware past its design limits. Dr "Heartbleed" Bagley shows us the rest of his Atari collection. Professor Steve Fur...

How are images represented in a computer? Image analyst & Research Fellow Mike Pound gives us a snapshot. (First in a series on computer vision) Digital Imag...

It became the music sequencing tool of choice for countless musicians, almost by chance. The Atari ST was launched 30yrs ago and Dr. Steve "Heartbleed" Bagle...

What was The Imitation Game? It inspired the name for the recent Alan Turing's movie but just what was it? Professor Brailsford explains how Turing may have ...

The 4th dimension? A concept Marc ten Bosch has used to create an innovative game. We talk to him about developing Miegakure. More: http://bit.ly/MiegakureGa...

Negative Binary Numbers - you may have heard of 'signed' numbers, but do you know how they work? Professor Brailsford explains not just how, but why we use t...

What sorts of computations does the DIRAC supercomputer do and where do you start when you decide you want to build a supercomputer? Dr Mark Wilkinson from U...

This Supercomputer is doing some of the most difficult computations in the world, about things that are out of this world. Thanks to Dr Mark Wilkinson & Gary...

Back to basics, at the start of a series on binary numbers Professor Brailsford tackles binary addition and just what is meant by an overflow. How Gangnam St...

Pixar researcher Tony DeRose spoke to Brady over on Numberphile, here's some extra stuff from their conversation not used in the main video. Math and Movies ...

Audible free book: http://www.audible.com/computerphile Circuits that use latches to store data are a cornerstone of computing. Dr Steve Bagley shows us how ...

This installment of the Bletchley Park series has a personal note for Professor Brailsford. He tells us what his dad did in the war. Professor Brailsford's n...

Main Film: http://youtu.be/Qrl__J4vYok http://www.facebook.com/computerphile https://twitter.com/computer_phile This video was filmed and edited by Sean Rile...

Robots Automatically loading 3D Xray machines - but why? Professor Tony Pridmore explains how computer science is helping botanists to learn more about plant...

How can you make your holiday decorations more interesting? Add computer control! Dr 'Heartbleed' Steve Bagley shows us his setup. Dr Bagley's code is based ...

Voting is centuries old, why can't we move with the times and use our phones, tablets and computers? Tom Scott lays out why e-voting is such a bad idea. More...

When YouTube was created, they had no idea that a video might amass over 2 billion views. Dr Steve Bagley explains why Psy's Gangnam Style music video forced...

Just how did the team at Bletchley Park tackle the problem of decoding Enigma? In Part Two of our series on "The Real" Imitation Game, Professor Brailsford e...

Audible free book: http://www.audible.com/computerphile What happens when you click on a link? Dr Richard Mortier explains the mechanics of connecting you wi...

The Enigma cipher machine, said to be unbreakable. Alan Turing had a pivotal role in cracking Enigma codes during WWII. Professor Brailsford takes us through...

Free as in freedom, not free as in cost, but part of the deal is that the software code is released, so if there's always the ability to get the source code,...

ISPs don't always get it right - they gamble that all of their subscribers won't use all of their bandwidth all of the time. Dr Richard Mortier explains Stat...

More information about the swimming tracking technology featured in our Swim Tracking App video: http://youtu.be/-UxBdVirvJs More on Joe's swim tracking tech...

This is an explanatory video to accompany the last Computerphile entitled 'Free Software' which had a couple of technical problems. This is not a tutorial, n...

Why the Free Software Foundation say iTunes isn't free software. Matt Lee, Technical Lead at Creative Commons explains. Swim Tracking App: http://youtu.be/-U...

Indoor navigation is tricky enough but try doing it in a swimming pool! Joe tells us how he's developed technology that could give you instant feedback on yo...

Audible free book: http://www.audible.com/computerphile What's the technical side of the net neutrality debate? We look at how a it works with a fictitious v...

Extra footage about crowd-sourcing event coverage, including how rights and bandwidth provide additional challenges to the idea. Put this in context by viewi...

Every spectator is a potential camera operator, that's the basis of this research into crowd-sourced event coverage. Dr Martin Flintham explains the idea. Fr...

Routers carry the traffic of the internet, we talk to Dr Richard Mortier about how they work and what happened to YouTube when a government censorship exerci...

Extra Bits of Brady's interview with Dr Steve Bagley about e-reader text layout problems The Kindle Text Problem: http://youtu.be/kzdugwr4Fgk http://www.face...

Why is it that PDFs look great and yet e-books can look ropey? - Dr Steve Bagley turns Brady into a computer to find out. EXTRA BITS: http://youtu.be/CdbvgRq...

Taking a solemn oath to promise never to write a program that analyses other programs? - That's how Professor Brailsford felt when he first understood undeci...

Audible free book: http://www.audible.com/computerphile Shellshock is potentially a bigger problem than Heartbleed, as Dr Steve Bagley explains. Heartbleed, ...

If musical instruments could speak, what stories could they tell? Professor Benford and his team have created an instrument that documents its own life - the...

$20 off your 1st purchase at www.LittleBits.com use the code “COMPUTERPHILE” The Barber Paradox: Professor Brailsford continues the history of undecidability...

Our thanks to http://www.harrys.com/ use the coupon code "COMPUTERPHILE" for $5 off 3D perspective personalised to multiple viewers of the screen - cutting e...

With images copied via instant screen-grab & websites stripping metadata clean away where does it leave the creators? Professor Derek McAuley talks about the...

What was the first undecidable problem? Professor Brailsford takes us on a computerphile tangent & gives us his angle on a pre-computer example of undecidabi...

Hyperspace was hijacked by science fiction, but what is a space? Robert Miles explains with the use of small red rabbits and human faces. How Broadband ADSL ...

How does ADSL work and what are those noises Modems used to make? Characters, Symbols and the Unicode Miracle: http://youtu.be/MijmeoH9LT4 Floating Point: ht...

Audible free book: http://www.audible.com/computerphile Artificial Intelligence can be thought of in terms of optimization. Robert Miles explains using the e...

This Primer is to accompany the 'Busy Beaver Turing Machines' film which can be viewed here: http://youtu.be/CE8UhcyJS0I Professor Brailsford's code and furt...

The Busy Beaver game, pointless? Or a lesson in the problems of computability? - How do you decide if something can be computed or not? Professor Brailsford'...

Turing Machines are the basis of modern computing, but what actually is a Turing Machine? Assistant Professor Mark Jago explains. Turing & The Halting Proble...

What are the long term effects of wearing VR head-sets? Can you use VR to shrink your body and have the illusion of more space on board an aircraft? Thanks t...

Alan Turing almost accidentally created the blueprint for the modern day digital computer. Here Mark Jago takes us through The Halting Problem. Turing Machin...

This giant robot arm (usually seen on the factory floor) is being used to research the effects of in flight comfort for the VR Hyperspace project. Many thank...

A practical demonstration of a theory in immunology called "The Danger Theory" that provided the source for the "Dendritic Cell Algorithm" mentioned in our m...

Artificial Immune Systems are taking on board cutting edge immunology research and creating algorithms that exploit it. Dr Julie Greensmith explains The Dang...

Audible free book: http://www.audible.com/computerphile Catering for a global audience is difficult, Tom takes us through a 'timezones' style explanation of ...

Tablets are taking over from desktop computing but what if we merge the two? This prototype demonstrates something new, that builds upon something centuries ...

Spies used to meet in the park to exchange code words, now things have moved on - Robert Miles explains the principle of Public/Private Key Cryptography note...

The closest thing to Star Trek's 'Holodeck' - a large scale tracking lab with VR headsets used to develop everything from redirected walking to quadcopter co...

Borrowing from biology and implementing in binary, AIS closely follows immunology and uses it in many areas, including system security. Dr. Julie Greensmith ...

Audible free book: http://www.audible.com/computerphile Unicode is changing, adding tons more icons and smilies - But what's new and why? Tom Scott takes us ...

The Oculus Rift isn't the only way to experience Virtual Reality - A VR CAVE uses large screens and projectors to transform your environment. Many thanks to ...

The story of recursion continues as Professor Brailsford explains one of the most difficult programs to compute: Ackermann's function. Professor Brailsford's...

Can Virtual Reality be used on aircraft to improve in-flight comfort? The VR Hyperspace project has been exploring that idea and ahead of a series of Compute...

How do logic gates store information? - We explore how computer memory works with Dr. Steve "Heartbleed" Bagley Domino Addition -- Numberphile: http://youtu....

Audible Free Book: http://www.audible.com/computerphile Following on from our film on recursion, Professor Brailsford uses the Fibonacci Sequence as a furthe...

How or why would a computer ever panic? - What actually happens when things go wrong? Our own 'Dr Heartbleed' Steve Bagley with what happens when a computer ...

Real life isn't as simple as true or false - Fuzzy logic allows you to have degrees of truth, meaning computer programmes can deal with more diverse situatio...

Many of us use Location Services & GPS on smartphones but Cell Phone Companies have been able to track us for a long time. Professor Derek McAuley explains. ...