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The 402 could read punched cards at a speed of 80 to 150 cards per minute, depending on process options, while printing data at a speed of up to 100 lines per minute. The built-in line printer used 43 alpha-numerical type bars (left-side) and 45 numerical type bars (right-side, shorter bars) to print a total of 88 positions across a line of a report.
The IBM Card-Programmed Electronic Calculator or CPC was announced by IBM in May 1949. Later that year an improved machine, the CPC-II , was also announced. IBM's electronic (vacuum tube) calculators could perform multiple calulations, including division.
1984: The IBM 029 Card Punch, announced in 1964, was withdrawn from marketing.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 was still in operation at a filter manufacturing company in Conroe, Texas. [71]
IBM 402 and 403, from 1948, were modernized successors to the 405. Control panel for an IBM 402 Accounting Machine. 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.
The THG IntroMaker would allow one to create a self-contained executable program which played music and displayed graphics on screen without the need for any knowledge of computer programming. A much more advanced and highly sophisticated extension of this today would be Farbrausch 's .werkkzeug .
Learn how to download and install or uninstall the Desktop Gold software and if your computer meets the system requirements.
An IBM tabulating machine, such as the 402 or 407 series would have several counters available in different sizes. (For example, the IBM 402/403 had four sets each of 2, 4, 6 and 8 digit counters, labeled 2A, 2B, 2C, 2D, 4A, 4B etc.) Each counter had two counter control entries to specify either addition (plus) or subtraction (minus). If ...
x. AOL fonctionne mieux avec les dernières versions des navigateurs. Vous utilisez un navigateur obsolète ou non pris en charge, et certaines fonctionnalités de AOL risquent de ne pas fonctionner correctement.