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:
Sep. 30, 1986
Filed:
Sep. 30, 1983
John J Bradley, Framingham, MA (US);
Brian L Stoffers, No. Billerica, MA (US);
Theodore R Staplin, Jr, Chelmsford, MA (US);
Melinda A Widen, Arlington, MA (US);
Honeywell Information Systems Inc., Waltham, MA (US);
Abstract
Processor apparatus is described for performing binary and decimal arithmetic operations. In performing decimal multiplication with the processor apparatus, to reduce the amount of processing to be done with the apparatus and thereby speed up the performance of the decimal multiplication, the leading zeroes prefixing the highest order significant digit in both a multiplier and a multiplicand are identified, counted and removed. Decimal multiplication is then performed using the stripped multiplier and multiplicand, and to the resultant partial product a number of zeroes are prefixed equal to the number of zeroes originally stripped from the multiplier and multiplicand. The result is the product of the original multiplier and multiplicand.