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:
Dec. 19, 1978
Filed:
Apr. 03, 1978
Thomas J Balph, Mesa, AZ (US);
Richard H Lane, Mesa, AZ (US);
Motorola, Inc., Schaumburg, IL (US);
Abstract
An expandable array multiplier is disclosed using an asynchronous, sequential add technique for multiplying two numbers in either straight magnitude or two's complement notation. First and second control terminals are provided for simplifying expansion to larger array sizes. The control terminals can be programmed to select either two's complement or straight magnitude multiplication. For a two's complement multiply, the control terminals are programmed according to the relative position of the particular multiplier within an expanded array such that the proper two's complement correction terms are generated within a particular multipler. A carry-lookahead technique is used to further improve multiplier performance.