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  2. IBM 1442 - Wikipedia

    en.wikipedia.org/wiki/IBM_1442

    The following units were not designed to punch cards: The 1442 Model 3 attaches to an IBM 1410 or IBM 7010 computer system. It reads cards at 400 cpm. One stacker is standard on the Model 3. The 1442 Model 4 attaches to an IBM 1440 computer system. It reads cards at 400 cpm. Two stackers are standard on the Model 4.

  3. 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.

  4. 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 ...

  5. Keypunch - Wikipedia

    en.wikipedia.org/wiki/Keypunch

    Punch cards were stepped across the punch one column at a time, and the appropriate punches were activated to create the holes, resulting in a distinctive "chunk, chunk" sound as columns were punched. Both machines could process 51-, 60-, 66-, and 80-column cards. [20] The 026 could print the punched character above each column.

  6. IBM System/360 Model 20 - Wikipedia

    en.wikipedia.org/wiki/IBM_System/360_Model_20

    The 2560 has two hoppers into which punch cards can be placed. The cards in the second hopper can contain punched cards to be read or blank cards to be punched. Two models were offered: Model A1: five card stackers, and an optional printing/interpreter, with two, four or six print heads. [7] Model A2: four card stackers.

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