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Punched card input/output. 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 ...
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 ...
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 ...
Typing on a laptop keyboard. A computer keyboard is a peripheral input device modeled after the typewriter keyboard [1][2] which uses an arrangement of buttons or keys to act as mechanical levers or electronic switches. Replacing early punched cards and paper tape technology, interaction via teleprinter -style keyboards have been the main input ...
Punched card. Wikimedia Commons has media related to Punch cards. This category contains articles about punched cards and card handling equipment, including card readers, card punches, and keypunches .
The machine was controlled by a "chain of cards"; a number of punched cards laced together into a continuous sequence. [9] Multiple rows of holes were punched on each card, with one complete card corresponding to one row of the design. Both the Jacquard process and the necessary loom attachment are named after their inventor.
IBM 1402 reader/punch; IBM 2501 reader. IBM 1442[ 1 ][ 2 ] is a combination IBM card reader and card punch. It reads and punches 80-column IBM-format punched cards [ 3 ] and is used on the IBM 1440, the IBM 1130, the IBM 1800 [ 4 ] and System/360 [ 5 ] and is an option on the IBM System/3. [ 6 ]
The mistaken identity (often of one twin for another) is a centuries-old comedic device used by Shakespeare in several of his works. The mistake can be either an intended act of deception or an accident. Modern examples include The Parent Trap; The Truth About Cats and Dogs; Sister, Sister; and the films of Mary-Kate and Ashley Olsen.
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