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. 31, 1996
Filed:
May. 14, 1993
Applicant:
Inventors:
David R Lunsford, Austin, TX (US);
Michael D Durkin, Austin, TX (US);
Assignee:
Dell USA, L.P., Austin, TX (US);
Primary Examiner:
Assistant Examiner:
Int. Cl.
CPC ...
C06F / ;
U.S. Cl.
CPC ...
395800 ; 3642286 ; 3642292 ; 3642802 ; 36493149 ;
Abstract
A digital computer system includes a central processor unit (CPU) and an optional co-processor unit, both connected to a local bus. The co-processor unit, when installed, fits into a socket having pins, the pins being connected to communicate with the CPU through the local bus. A presence-detect circuit is connected to the local bus and receives a signal indicating the presence of the co-processor unit in the socket. Logic circuitry receives the output signal from the presence-detect circuit and provides a READY-- signal in either the presence or absence of the co-processor unit.