Punched card

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Punched cards in use in a Jacquard loom.

A punched card, punch card, IBM card, or Hollerith card is a piece of stiff paper that contains digital information represented by the presence or absence of holes in predefined positions.

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• Related: Card image, History of computing hardware, Paper data storage

VintageTech VintageTech www.vintagetech.com - Web

UNIVAC Punch Card Gallery UNIVAC Punch Card Gallery www.fourmilab.ch/documents/univac/cards.html - Web

Cardamation Cardamation www.cardamation.com - Web

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An Emulator for Punched cards An Emulator for Punched cards www.kloth.net/services/cardpunch.php - Web

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