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:
May. 26, 1987
Filed:
Dec. 21, 1984
Applicant:
Inventor:
Dilip K Bhavsar, Shrewsbury, MA (US);
Assignee:
Digital Equipment Corporation, Maynard, MA (US);
Attorney:
Primary Examiner:
Int. Cl.
CPC ...
G11C / ;
U.S. Cl.
CPC ...
365154 ; 365201 ; 371 25 ; 307465 ;
Abstract
A digital circuit operable in a normal mode and in a test mode including memory elements which each operates as a static latch during the normal mode and operates as a dynamic master-slave flip-flop during the test mode. The digital circuit also includes combinational logic having a plurality of outputs, means operable in the normal mode to connect a combinational logic output to each of the inputs of the memory elements, and means operable in the test mode to connect outputs of memory elements to inputs of other memory elements so as to form a shift register to facilitate testing of complex digital circuits.