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Hollerith pantographic card-punching machine

Hollerith pantographic card-punching machine

C033/7410

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Credit

LIBRARY OF CONGRESS / SCIENCE PHOTO LIBRARY LIBRARY OF CONGRESS / SCIENCE PHOTO LIBRARY

Restrictions:

Editorial use only.

Caption

Hollerith pantographic card-punching machine. A woman uses a pantographic hole-punching machine to punch holes in cards. The cards represent data input for a electromechanical data processing machine (forerunner of the computer). Herman Hollerith's Pantographic Card Punch was developed for the 1890 US census. Prior to 1890, cards were punched using a train conductor's ticket punch. The Pantographic punch allowed accurate placement of holes across the whole card. A skilled Pantograph operator could punch 700 cards per day. Photographed between 1915 and 1923.

Release details

Model release not available. Property release not available.

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