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. 14, 1982
Filed:
Sep. 08, 1980
Applicant:
Inventor:
Philip S Smith, Austin, TX (US);
Assignee:
Motorola, Inc., Schaumburg, IL (US);
Primary Examiner:
Int. Cl.
CPC ...
G06F / ; G06F / ;
U.S. Cl.
CPC ...
364716 ; 307469 ;
Abstract
A CMOS static ALU is capable of selecting one operand from a plurality of inputs and can perform various arithmetic and logic operations in addition to shift left and shift right operations. The ALU uses exclusive OR gates having a minimum number of transistors. In addition, more N-channel transistors are used than P-channel transistors which results in overall smaller size and faster operation. In addition, the ALU has a RAM cell for use as a temporary storage means which is capable of driving the ALU data bus.