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:
Aug. 20, 1985
Filed:
Jul. 30, 1982
Applicant:
Inventor:
Tomoatsu Yanagita, Isehara, JP;
Assignee:
Hitachi, Ltd., Tokyo, JP;
Attorney:
Primary Examiner:
Assistant Examiner:
Int. Cl.
CPC ...
G06F / ;
U.S. Cl.
CPC ...
364749 ;
Abstract
A decimal arithmetic unit for carrying out a decimal arithmetic operation for first and second operands each consisting of a sign digit and numeric data comprises arithmetic means for carrying out the decimal arithmetic operation and sign processing means for processing the sign digits. The numeric data excluding the sign digits of the first and second operands are supplied to the arithmetic means and the sign digits of the first and second operands are supplied to the sign processing means. An output of the arithmetic means and an output of the sign processing means are merged to produce an operation result.