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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 60 (1955) John Deere Model 530 (1959) John Deere Model 430S (circa 1960) After years of testing, Deere & Company released its first proper diesel engined tractor in 1949, the Model R. The R was also the first John Deere tractor with a live independent power take-off (PTO) equipped with its own clutch. The R also incorporated ...
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.
Pain in the lower left abdomen may be caused by several different conditions. Experts explain.
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.