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:
Jul. 19, 1977
Filed:
Aug. 17, 1976
Kazuo Minorikawa, Tokyo, JA;
Hitachi, Ltd., , JA;
Abstract
A counter particularly useful for a program counter comprising a plurality of logic units representative of digits of information data being stored in the counter, each logic unit including a flip-flop circuit indicative of the value of each digit, an exclusive OR circuit connected with the input of the flip-flop circuit and an OR circuit connected with an input of the exclusive OR circuit, the output of the flip-flop circuit being connected to another input of the exclusive OR circuit. A control signal and a carry signal are supplied to the inputs of the OR circuit of an associated one logic unit. The least significant digit logic unit lacks an OR circuit since no carry signal is supplied thereto so that a least significant digit control signal is directly supplied to one input of the exclusive OR circuit of the least significant digit logic unit.