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:
Nov. 14, 1978
Filed:
Oct. 27, 1976
Thomas E Merrow, Dallas, TX (US);
Stephen P Hamilton, Garland, TX (US);
Larry L Miles, Garland, TX (US);
Charles P Grant, Jr, deceased, late of Dallas, TX (US);
Texas Instruments Incorporated, Dallas, TX (US);
Abstract
An electronic calculator or microprocessor system of the type preferably having keyboard input and a visual display is implemented with a semiconductor chip having a arithmetic unit and memory system. The arithmetic unit and memory system include a plurality of operational registers and an arithmetic unit having two inputs and an output. A plurality of operational registers selector gates interconnect the operational registers and arithmetic unit for connecting any selected two of the plurality of operational registers to the inputs of the arithmetic unit. The plurality of operation register selector gates preferably comprise individual MOS transfer gates.