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A card reader is a data input device that reads data from a card-shaped storage medium and provides the data to a computer. Card readers can acquire data from a card via a number of methods, including: optical scanning of printed text or barcodes or holes on punched cards, electrical signals from connections made or interrupted by a card's punched holes or embedded circuitry, or electronic ...
Punched cards. A punched card is a flexible write-once medium that encodes data, most commonly 80 characters. Groups or "decks" of cards form programs and collections of data. The term is often used interchangeably with punch card, the difference being that an unused card is a "punch card," but once information had been encoded by punching ...
A computer punched card reader or just computer card reader is a computer input device used to read computer programs in either source or executable form and data from punched cards. A computer card punch is a computer output device that punches holes in cards. Sometimes computer punch card readers were combined with computer card punches and ...
A 12-row/80-column IBM punched card from the mid-twentieth century. A punched card (also punch card[1] or punched-card[2]) 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. Punched cards were widely used in the 20th century, where unit ...
The IBM 1402 was a high-speed card reader/punch introduced on October 5, 1959 as a peripheral input/output device for the IBM 1401 computer. It was later used with other computers of the IBM 1400 series and IBM 7000 series product lines. [1] [2] It was adapted as the IBM 1622 Card Read-Punch for the IBM 1620 [3] and provided the basic design ...
Common Access Card. A Common Access Card (CAC). The common access card, also commonly referred to as the CAC, is the standard identification for active duty United States defense personnel. The card itself is a smart card about the size of a credit card. [1] Defense personnel that use the CAC include the Selected Reserve and National Guard ...
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