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Cover photo info
- Photo title: Card Punch Mechanism used to insert manually information on punched cards, at points designated by keys pressed by the operator
- Author: Pedroemanuelp
- Cover photo description:
- Card Punch Mechanism used to insert manually information on punched cards, at points designated by keys pressed by the operator. The first models, which emerged at the end of the 19th century, used handheld devices, which were later improved and mechanized.
- Image ID:230501552
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