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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 ...
Columbia University Computing History: IBM Control Panels; IBM Archives: IBM 407 control panel photo; Rice, Rex (1954). "Why not try a plugboard?". Proceedings of the December 8-10, 1954, eastern joint computer conference: Design and application of small digital computers on - AIEE-IRE '54 (Eastern). ACM Press. pp. 4–11. doi:10.1145/1455270. ...
John Deere Model M tractor. After the models A and B got new styling, both tractors were given six-speed transmissions in late 1940. The A was 29 hp (22 kW) out of a 321 cu in (5.3 L) engine, while the smaller B was both 18 and 23 hp (13 and 17 kW), reflecting the earlier and later updates between 1938 and 1946.
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 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.
Backhoe Loader Cat 420E A JCB 3CX backhoe loader A JCB backhoe loader performing work in India. A backhoe loader, also called a loader backhoe, loader excavator, tractor excavator, [1] digger or colloquially shortened to backhoe within the industry, is a heavy equipment vehicle that consists of a tractor-like unit fitted with a loader-style shovel/bucket on the front and a backhoe on the back.
No matter how you slice it, the Chicago Cubs were one of the most disappointing teams of 2024. Improved play in the second half enabled a winning record and a second-place finish in the NL Central ...
The 402 and 403 were primarily controlled by a removable control panel. Additional controls included a carriage control tape and mechanical levers called hammersplits and hammerlocks, that controlled some printing functions. [1] Both the IBM 402 and IBM 403 were considered smaller models of the prior model IBM 405.