BI-DIRECTIONAL PARALLEL PRINTER INTERFACE

A parallel interface connects a data processor and a printer so that each may transmit information to the other or receive information from the other. The transmitted information from the data processor can be data or status signals. The data or status signals are transmitted over the same eight inf...

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Bibliographische Detailangaben
Hauptverfasser:	BOOTH, JAMES RONALD, COLE, CARL PRICE, LOUIE, TIMOTHY JUNG-MING, WEBB, JAMES FRANCIS, OLIVER, LYNN MARVIN, BECK, JAMES LEE, NEEL II, ALAN FOBES, BUCHANAN, JAMES CLOYD, WARD, JAMES PETER, CLAFFEY-COHEN, MARGARET ELIZABETH
Format:	Patent
Sprache:	eng
Schlagworte:	CALCULATING COMPUTING CORRECTION OF TYPOGRAPHICAL ERRORS COUNTING ELECTRIC DIGITAL DATA PROCESSING i.e. MECHANISMS PRINTING OTHERWISE THAN FROM A FORME LINING MACHINES PERFORMING OPERATIONS PHYSICS PRINTING SELECTIVE PRINTING MECHANISMS STAMPS TRANSPORTING TYPEWRITERS
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Beschreibung
Zusammenfassung:	A parallel interface connects a data processor and a printer so that each may transmit information to the other or receive information from the other. The transmitted information from the data processor can be data or status signals. The data or status signals are transmitted over the same eight information lines between the data processor and the printer with a predetermined signal being sent over another line from the data processor to the printer prior to transmission over the eight lines to identify whether the transmitted information is data or status signals. The printer sends status signals to the data processor over the same eight information lines after sending a predetermined signal to the data processor over a further line that it is going to transmit.