"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 University of Nottingham we asked him how it came about. "Most Difficult Program" - Ackermann Function:
Computer That Changed Everything - Altair 8800:
Factory of Ideas - Working at Bell Labs:
More from BWK on other computer languages at:
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

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