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A punched card (also punch card or punched-card) is a piece of card stock that stores digital data using punched holes. Punched cards were once common in data processing and the control of automated machines.
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Punched cards, also known as punch cards, dated to the late 18th and early 19th centuries when they were used to “program” cloth-making machinery and looms. In the late 1880s, inventor Herman Hollerith, who was inspired by train conductors using holes punched in different positions on a railway ticket to record traveler details, invented ...
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Card punching has four key stages: punching, verifying, sorting and tabulating. In a 1948 Powers-Samas advertisement, the automatic keypunch was referred to as ‘the Rolls Royce of punching...
Mar 10, 2024 · Punch cards (or " punched cards "), also known as Hollerith cards or IBM cards, are paper cards where holes may be punched by hand or machine to represent computer data and instructions. They were a widely used means of inputting data into early computers.
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