ocr: Header Prmter Intertace Functional Description - Parallel digital 1/0 card which allows 24TTL/DTLO compatible digital I/01 lines to be monitored controlled by an IBM PC/XT/ ATor compatible. The board - - - - provides access to the PC'si interrupt - input and enable lines.... - - : Itis a tlexible interface for high current para alleli input/output devices such as printer....
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