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IBM 407 (left) with IBM 519 (on right). The 407 read punched cards, totaled fields on the cards, made simple decisions, printed results, and, with the aid of a summary punch, output results on punched cards that could be input to other processing steps. The operation of the 407 was directed by the use of a removable control panel and a carriage ...
The 1952 Bull Gamma 3 could be attached to this tabulator or to a card read/punch. [20] [21] IBM 407. Introduced in 1949, the 407 was the mainstay of the IBM unit record product line for almost three decades. It was later adapted to serve as an input/output peripheral for several early electronic calculators and computers.
The 407 also had exits from each print wheel that could then feed the counters for addition or subtraction. This insured that totals always matched what was printed. Counter entries. An IBM tabulating machine, such as the 402 or 407 series would have several counters available in different sizes.
1980: The last reconditioning of an IBM 519 Document Originating Punch. [68] 1984: The IBM 029 Card Punch, announced in 1964, was withdrawn from marketing. [69] IBM closed its last punch card manufacturing plant. [70] 2010: A group from the Computer History Museum reported that an IBM 402 Accounting Machine and related punched card equipment ...
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 ...
Dehomag was a German subsidiary of IBM and later a standalone company with a monopoly in the German market before and during World War II. [1] The word was a syllabic abbreviation for Deutsche Hollerith-Maschinen GmbH (English: German Hollerith Machines LLC).
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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.