How did punch card systems work? Professor Brailsford delves further into the era of mainframe computing with this hands-on look at punch cards.
Extra Material on Punch Cards: • EXTRA BITS - More abou...
Extra Material - behind the scenes: • EXTRA BITS - Behind th...
Mainframes to Unix: • Mainframes and the Uni...
Near to the Metal: • Near to the Metal - Co...
Addendum: "ICL punched cards actually have 12 rows -- not 11 as stated in the film. Choosing any two hole positions out of 12 gives 66 combinations -- which can represent 66 different characters. This in turn is more than enough for the 64 possibilities of a 6-bit character held in ICL computer memory. Also, some special characters could actually utilise three hole configurations adding further to the possibilities."
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This video was filmed and edited by Sean Riley.
Computer Science at the University of Nottingham: bit.ly/nottscomputer
Computerphile is a sister project to Brady Haran's Numberphile. See the full list of Brady's video projects at: bit.ly/bradychannels
19 июн 2024