Dienstag, 25. Oktober 2011

steampunk - punched cards

http://en.wikipedia.org/wiki/Punched_card

Punched cards were first used around 1725 by Basile Bouchon and Jean-Baptiste Falcon as a more robust form of the perforated paper rolls then in use for controlling textile looms in France. This technique was greatly improved by Joseph Marie Jacquard in his Jacquard loom in 1801.


Punched cards in use in a Jacquard loom.


Semen Korsakov was reputedly the first to use the punched cards in informatics for information store and search. Korsakov announced his new method and machines in September 1832, and rather than seeking patents offered the machines for public use

Semen Korsakov's punched card

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