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 C Programming Language: 5 Hole Paper Tape: Punch Card Programming: The Great 202 Jailbreak: This video was filmed and edited by Sean Riley. Computer Science at the University of Nottingham: Computerphile is a sister project to Brady Haran's Numberphile. More at