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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 ...
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.
For most machines with control panels, from collators, interpreters, to the IBM 407, IBM manuals describe the control panel as "directing" or "automatic operation was obtained by...". The control panels of calculators, such as the IBM 602 and IBM 604, that specified a sequence of operations, were described as being programs.
The description below describes an all-IBM shop (a "shop" is programmer jargon for a programming site) but shops using other brands of mainframes (or minicomputers) would have similar equipment although because of cost or availability might have different manufacturer's equipment, e.g. an NCR, ICL, Hewlett-Packard (HP) or Control Data shop would have NCR, ICL, HP, or Control Data computers ...
WASHINGTON (Reuters) -U.S. President Joe Biden on Monday commuted the sentences for 37 out of 40 federal inmates on death row, converting them to life in prison without parole before he hands over ...
Below are the primetime rankers for broadcast, cable and premium cable networks in 2024, among total viewers (as well as the top 50 list in adults 18-49).
YouTube TV announced Thursday that the price of its subscription service will be rising, again.. In an email to customers, YouTube TV announced that it will be increasing its prices by $10 ...
The operation of Hollerith/BTM/IBM/Bull tabulators and many other types of unit record equipment was directed by a control panel. [85] Operation of Powers-Samas/Remington Rand unit record equipment was directed by a connection box. [86] Control panels had a rectangular array of holes called hubs which were organized into groups.