Electricity: electrical systems and devices – Housing or mounting assemblies with diverse electrical... – For electronic systems and devices
Patent
1993-11-12
1996-01-02
Phillips, Michael W.
Electricity: electrical systems and devices
Housing or mounting assemblies with diverse electrical...
For electronic systems and devices
361737, 361684, 439637, 439680, G06F 116, H05K 710, H01R 1364
Patent
active
054814324
ABSTRACT:
A thin and small computer system that can be used generally for control equipment or the like, includes a CPU chip, peripheral control chips, and other components mounted in the form of a bare chip, whereby a computer system having a so-called ISA architecture can be incorporated in an IC card-like casing. A 236-pin connector is formed on a long side of this card-type computer, and is connected to a control bus and an IO bus of the card-type computer. The control bus and the IO bus are not located at opposed positions in the connector. A position of separating the buses from each other is off the center of the connector. Power lines or ground lines are provided at the separating positions in the connector, thus preventing occurrence of unnecessary electromagnetic radiation noise. RAMs are mounted on a sub-PW board, which provides flexibility for the system. A bare chip of an EEPROM is mounted on another printed wiring board, which enables electrical forming to be performed after such mounting.
REFERENCES:
patent: 4211919 (1980-07-01), Ugon
patent: 4295041 (1981-10-01), Ugon
patent: 4849944 (1989-07-01), Matsushita
patent: 4996766 (1991-03-01), Piorunneck et al.
patent: 5003273 (1991-03-01), Oppenberg
patent: 5319516 (1994-06-01), Perkins
patent: 5331509 (1994-07-01), Kikinis
"386SL CPU Board Measures 4 By 4 In." Electronic Design, 131 Aug. 5, 1993.
Kamihata Tomio
Nakamura Norio
Nimura Minoru
Suemori Hiroyuki
Tsukada Katsumi
Phillips Michael W.
Seiko Epson Corporation
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