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:
Jul. 30, 1991
Filed:
Jan. 22, 1991
David R Lunsford, Austin, TX (US);
Joe E Llamas, Round Rock, TX (US);
Dell USA Corporation, Austin, TX (US);
Abstract
A personal computer system has an I/O channel and a memory channel with a main logic board incorporating both the I/O channel and the memory channel. The computer has eight (8) expansion slots including a dual-purpose expansion slot for providing space for selective connections of I/O devices through the use of full-length logic cards or half-length logic cards being inserted into edge connectors, High speed memory, including memory control, is mounted on the main logic board and expansion memory, controlled by the memory control is mounted on a printed circuit card that is connected to the memory channel in position within the dual-purpose expansion slot, occupying approximately one-half of that slot, thereby enabling the dual-purpose expansion slot to encompass both the expansion memory and a half-length logic card. In another embodiment, the half-length logic card and the memory card within the dual-purpose expansion slot are integrated into a single logic/memory card.