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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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Jun 20, 2024 · Punch cards, also known as “Hollerith cards,” or “IBM cards,” are stiff paper cards where holes can be punched manually or by a machine to symbolize computer data and commands. These were once the primary method for storing and processing data before the advent of modern computers.
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.
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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Punched Card Machines. For almost fifty years, the Hollerith punched card held the majority of the world’s known information and was the primary method of storing, sorting and processing data....
Punch cards surviving in the Smithsonian collections reflect the widespread use of computers - they announced scores on standardized tests, served as a library cards, were part of the proof of mathematical theorems, and kept medical records.
Punched cards, a mainstay of early office automation and computing, helped launch the transition from doing math to processing data. Patterns of holes punched in cards can represent any kind of information.
