IBM 513

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The IBM 513 Reproducing Punch (photo) was a card punching machine developed by IBM. The machine could perform these functions:

  • Reproducing all or part of the data on a deck of punched cards.
  • Gang punching—copying punched information from a master card.
  • Summary punching—punching a total or new balance card amounts which have been accumulated in the accounting machine.
  • Mark sensing—the operation by which information recorded in the form of pencil marks is turned into punches on the cards.

Mark sensing allowed a person to enter data to be used in punched-card data processing without using a keypunch machine. It was used for tasks such as recording long distance calls or electric meter readings.

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