The patent badge is an abbreviated version of the USPTO patent document. The patent badge does contain a link to the full patent document.
The patent badge is an abbreviated version of the USPTO patent document. The patent badge covers the following: Patent number, Date patent was issued, Date patent was filed, Title of the patent, Applicant, Inventor, Assignee, Attorney firm, Primary examiner, Assistant examiner, CPCs, and Abstract. The patent badge does contain a link to the full patent document (in Adobe Acrobat format, aka pdf). To download or print any patent click here.
Patent No.:
Date of Patent:
Jun. 07, 1977
Filed:
Dec. 20, 1974
Gerald Weber, Braunschweig, DT;
Jurgen Sorgenfrei, Braunschweig, DT;
Olympia Werke AG, Wilhelmshaven, DT;
Abstract
In a circuit arrangement composed of highly integrated chips for a microprogrammed data processing device of the type including an arithmetic and control unit, at least one read-only memory, at least one random access memory, connecting contacts on the chips for connection to peripheral units, and a bus connecting the chips together, each contact is connected to a function selecting unit whose operating state is controlled by a microprogram contained in the read-only memory to selectively connect the contact in the arrangement as either an input contact or an output contact. The function selecting unit includes for each contact a bistable circuit and a gating circuit controlled by the microprogram to determine when each contact constitutes an input or an output terminal.