The punch card as you know is a recording machine for holding information for the use of automated data processing machines. The card represents the information by the presence or absence of holes in predefined position on the card. Did you know that the creation and processing of these punch cards were handles by a variety of devices? These devices are the one producing and processing these cards. These are very important devices for the breakthrough of punch cards.
A card punch like the IBM 3525 is an electronically mechanized output device used to punch data into punch cards. It is sometimes combined with card readers and other functions to form multifunction machines. These are the IBM 2540 card reader punch. Such devices are attached to a computer. The early device designed was the Herman Hollerith’s Pantographic Card Punch. It allows accurate placement of holes with minimum physical strain, one hole at a time. It provides access to the interior of the card, allowing more information per card.
A keypunch is a device for manual entering of data into the punch cards. This is done by precisely punching the holes at locations assigned by the keys struck by the operator. The early and manual keypunches have evolved into mechanized keypunches. It often resembled a small desk with a keyboard similar to a typewriter, and hoppers for blank cards and stackers for punch cards. As characters are typed, a series of dies at the punch station strike the appropriate holes in the selected card column.
Unit record equipment is an electromechanical device that was use in data processing before the advent of electronic computers. These machines are ever-present in industry and government in the first half of the 20th century. They allow large volume, sophisticated, data processing tasks to be finished long before the computers are invented. This data processing was accomplished by processing decks of punch cards through various unit record machines in a carefully choreographed progression. The basic unit of data storage was the 80-column punch card.
Punch card system employs a card or cards and small clipboard-sized device for reading votes is a voting machine. Voters punch holes in the cards with a supplied punch device opposite their candidate or ballot issue choice. After voting, the voter may place the ballot in a ballot box, or the ballot may be fed into a computer vote tabulating device at the precinct. The idea of voting by punching holes on paper cards originated in the 1980’s. The first major success for punched-card voting came in 1965, with Joseph P. Harris' development of the Votomatic punched-card system.
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