EXTRA BITS of Brady's conversation with Professor Tom Rodden about what makes a computer. Main 'Computing' film (Credit Cards and Computing): https://www.youtube.com/watch?v=9pA8xMNVPjE http://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: http://bit.ly/nottscomputer Computerphile is a sister project to Brady Haran's Numberphile. See the full list of Brady's video projects at: http://bit.ly/bradychannels