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:
Mar. 14, 1978
Filed:
Jan. 03, 1977
Homer Warner Miller, Peoria, AZ (US);
Honeywell Information Systems Inc., Phoenix, AZ (US);
Abstract
An improved binary/binary coded decimal arithmetic logic unit employing soft-saturating current mode logic gates operates on pure binary data or binary coded decimal (BCD) data. The unit performs 16 binary and 2 decimal arithmetic operations and 16 Boolean operations on two 4-bit plus parity input fields. The particular operation is determined by a 5-bit mode control signal. A carry-in input CIN, duplicate carry-in input CIND, parity check PCK input, invert parity input IP, decimal mode signal D, and decimal add input DA are also provided. The device generates a binary output resultant of the operation defined by the mode control signal. In addition to the arithmetic or logic operations, the unit performs parity checking, parity carry, and parity prediction operations on 4-bit plus parity binary and BCD fields.