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IBM 402
The IBM 402 and IBM 403 Accounting Machines were tabulating machines introduced by International Business Machines in the late 1940s. The 402 could read punched cards at a speed of up to 150 cards per minute, while printing data at a speed of up to 100 lines per minute with 43 alpha-numerical type bars and 45 numerical type bars. The IBM 403 added the ability to print up to three lines—e.g. a multiline shipping address—from a single card, instead of just one line per card with the 402. 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.
In July 2010, a group from the Computer History Museum reported that an IBM 402 was still in operation at a filter manufacturing company in Conroe, Texas.〔(Visit to a working IBM 402 in Conroe, Texas )〕
==See also==
*IBM 407
*Keypunch
抄文引用元・出典: フリー百科事典『 ウィキペディア（Wikipedia）』
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