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  2. Unit record equipment - Wikipedia

    en.wikipedia.org/wiki/Unit_record_equipment

    Columns on different punch cards vary from 5 to 12 punch positions. The method used to store data on punched cards is vendor specific. In general each column represents a single digit, letter or special character. Sequential card columns allocated for a specific use, such as names, addresses, multi-digit numbers, etc., are known as a field.

  3. Punched card - Wikipedia

    en.wikipedia.org/wiki/Punched_card

    The torn off card is called a stub card. 80-column cards were available scored, on either end, creating both a short card and a stub card when torn apart. Short cards can be processed by other IBM machines. [51] [66] A common length for stub cards was 51 columns. Stub cards were used in applications requiring tags, labels, or carbon copies. [51]

  4. Punched card input/output - Wikipedia

    en.wikipedia.org/wiki/Punched_card_input/output

    An IBM 80-column punched card of the type most widely used in the 20th century IBM 1442 card reader/punch for 80 column cards. 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.

  5. Plugboard - Wikipedia

    en.wikipedia.org/wiki/Plugboard

    The action caused by an impulse on a wire depended on when in the cycle it occurred, a simple form of time-division multiplexing. Thus an impulse that occurred during 7-time on a wire connected to the column 26 punch magnet would punch a hole in row 7 of column 26. An impulse on the same wire that occurred at 4-time would punch a 4 in column 26.

  6. Computer programming in the punched card era - Wikipedia

    en.wikipedia.org/wiki/Computer_programming_in...

    A single program deck, with individual subroutines marked. The markings show the effects of editing, as cards are replaced or reordered. Many early programming languages, including FORTRAN, COBOL and the various IBM assembler languages, used only the first 72 columns of a card – a tradition that traces back to the IBM 711 card reader used on the IBM 704/709/7090/7094 series (especially the ...

  7. IBM 602 - Wikipedia

    en.wikipedia.org/wiki/IBM_602

    The IBM 602 Calculating Punch, introduced in 1946, was an electromechanical calculator capable of addition, subtraction, multiplication, and division. The 602 was IBM 's first machine that did division.

  8. Talk:Punched card - Wikipedia

    en.wikipedia.org/wiki/Talk:Punched_card

    This part number was likely for a standard punch card, with the stock printing across all 80 columns. Not certain, but I would expect a different number for other styles of printing (or possibly if the corner was cut on the other end). Standard Form 5081 was a US Government Standard Form that adopted the IBM 5081 punch card standard.

  9. Paycheck - Wikipedia

    en.wikipedia.org/wiki/Paycheck

    A paycheck, also spelled paycheque, pay check or pay cheque, is traditionally a paper document (a cheque) issued by an employer to pay an employee for services rendered. In recent times, the physical paycheck has been increasingly replaced by electronic direct deposits to the employee's designated bank account or loaded onto a payroll card.

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