Boots – shoes – and leggings
Patent
1982-04-08
1985-02-26
Smith, Jerry
Boots, shoes, and leggings
371 20, G06F 312
Patent
active
045021139
ABSTRACT:
In an electronic computer having a main frame including a keyboard and a processing unit, and a separable printer unit, a checking mechanism for checking if the printer unit is correctly connected to the main frame of the electronic computer is provided. The print operation is permitted only when the correct connection of the printer unit is detected by the checking mechanism.
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Maholick et al., "A Communication Structure for Printer Control", IEEE National Telecommunications Conference-1981, pp. E.4.2.1-E.4.2.5.
McCarthy, IBM Technical Disclosure Bulletin, "Diagnostic Hardware and Process for I/O Interfacing Devices", vol. 12, No. 8, Jan., (1980), pp. 1230-1231.
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Bodner et al., IBM Technical Disclosure Bulletin, "System Initialization Check", vol. 17, No. 7, Dec. 1974, pp. 2107-2108.
Canon Kabushiki Kaisha
Harkcom Gary V.
Smith Jerry
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