Computer

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 Tweets by computer_phile This video was filmed and edited by
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A simple bit-shift operation can generate amazing random strings of numbers. Dr Mike Pound explains then codes it in Python. https://www.facebook.com/computerphile Tweets by 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
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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 Tweets by 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
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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 Tweets by computer_phile This video was filmed and edited by Sean Riley. Computer Science at the
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A language designed to eliminate run-time errors? Professor Thorsten Altenkirch demonstrates programming Type Theory with Agda. https://www.facebook.com/computerphile Tweets by 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
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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 Tweets by 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
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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 Tweets by computer_phile This video was filmed and edited by Sean Riley. Computer Science at the University of Nottingham:
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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 Tweets by computer_phile This video was filmed and edited by Sean
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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 Tweets by computer_phile This video was filmed and edited by Sean Riley. Computer Science at the University
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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 Tweets by 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
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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:
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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 Tweets by 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
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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 Tweets by 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
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“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 Tweets by 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
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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 Tweets by computer_phile This video was filmed and edited by Sean Riley. Computer Science at the University of
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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 Tweets by 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
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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: Discovering Dennis Ritchie’s Lost Dissertation The Ritchie family’s Web site about the devices (hardware and software) that Dennis used to create his thesis is at: Unpacking
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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 Tweets by 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
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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 Tweets by computer_phile This video was filmed and edited by Sean Riley. Computer Science at the University
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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 Tweets by 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
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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 Tweets by 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
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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 Tweets by 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
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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 Tweets by computer_phile This video was filmed
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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 Tweets by computer_phile This video was filmed and edited by Sean Riley. Computer Science at the University of Nottingham:
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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 Tweets by 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
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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 Tweets by 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
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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 Tweets by computer_phile This video was filmed and edited by Sean Riley. Computer Science at the University of
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Professor Brailsford recalls the advent of Unix v7 and AT&T’s licensing procedure. https://www.facebook.com/computerphile Tweets by 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
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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 Tweets by 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
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The only viable alternative to AES? Dr Mike Pound unravels the clever ChaCha cipher. https://www.facebook.com/computerphile Tweets by 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
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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 Tweets by 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
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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 Tweets by 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
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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
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For Mathematics, trees are more useful than strings. Professor Thorsten Altenkirch takes us through a functional approach to coding them in Python. Thorsten’s Python programming book: https://bit.ly/2p3r5IT https://www.facebook.com/computerphile Tweets by 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
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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 bring a true videogame arcade experience into the home. Many thanks to The National Videogame Museum in Sheffield UK for setting up this interview: http://bit.ly/C_NVM Thanks also to
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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://www.facebook.com/computerphile Tweets by 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
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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.youtube.com/playlist?list=PLzH6n4zXuckoxFPyhsMOYMGqyZOeN2SDJ How Autofocus Works: https://youtu.be/B-TOUPXytw4 Why CPUs have Caches: https://youtu.be/6JpLD3PUAZk https://www.facebook.com/computerphile Tweets by computer_phile This video was filmed and edited by Sean Riley. Computer Science at the University of Nottingham:
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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 Tweets by computer_phile This video was filmed by Dr Steve Bagley and Sean Riley and edited by Sean Riley. Computer Science at the University of Nottingham: https://bit.ly/nottscomputer Computerphile is a sister project
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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)
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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://www.facebook.com/computerphile Tweets by computer_phile This video was filmed by Graham Hutton and edited by Sean Riley. Computer Science at the University of Nottingham: https://bit.ly/nottscomputer Computerphile is a sister project to Brady
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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.facebook.com/computerphile Tweets by 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
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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 Tweets by 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
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We put your questions to Computerphile stalwart Professor Dave Brailsford. https://www.facebook.com/computerphile Tweets by computer_phile This video was filmed by Professor Brailsford and Sean Riley & 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
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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 chat to Sean. https://www.facebook.com/computerphile Tweets by computer_phile This video was filmed by Mike Pound, Steve Bagley & Sean Riley and edited by Sean Riley. Computer Science at the
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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 about all sorts!) : https://youtu.be/DzTQEXtuWGU Contact Tracing: https://www.youtube.com/watch?v=EgIg90cFRVw The Great 202 Jailbreak: https://www.youtube.com/watch?v=CVxeuwlvf8w https://www.facebook.com/computerphile Tweets by computer_phile This video was filmed by Professor Brailsford & Sean Riley and edited
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