Modular host local expansion upgrade

Details Modular host local expansion upgrade Modular host local expansion upgrade

1995-10-11

1997-02-18

Harvey, Jack B.

395280, 395282, G06F 1300

Patent

active

056048718

ABSTRACT:
A personal computer system utilizes a simplified motherboard having connectors on the motherboard that are electrically connected to data, address, control, power and ground signals necessary for expansion and upgrade of the computer system and a riser card or cards having the desired interface connectors and logic circuits thereon. The present invention provides for operatively and removably coupling a plurality of I/O expansion cards, host local bus interfaces and future system upgrades for the computer system without burdening the base cost thereof. The computer system may be expanded or upgraded at any time during manufacture or in the field. A simple and low cost common motherboard is utilized in the manufacture of the computer systems, resulting in lower manufacturing costs. A base computer system may be easily upgraded when more features are desired. A riser card is configured for the desired features, plugged into the motherboard connectors, and the desired new peripheral features plugged into the riser card to complete the upgrade.

REFERENCES:
patent: 5338214 (1994-08-01), Steffes et al.
patent: 5440755 (1995-08-01), Harwer et al.

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