Browse Prior Art Database

Personal Computer Buffer Card

IP.com Disclosure Number: IPCOM000039136D
Original Publication Date: 1987-Apr-01
Included in the Prior Art Database: 2005-Feb-01
Document File: 2 page(s) / 33K

Publishing Venue

IBM

Related People

Charno, AA: AUTHOR [+2]

Abstract

A digital input/digital output device is utilized as an interface between a TECMAR* base board and an IBM Personal Computer (PC) to serve as a signal driver. The device's circuitry enables it to act as a high-powered, bi-state driver to drive more lines in those situations where more power is needed, e.g., tester, etc. The device works as follows. A Bidirectional Bus Transceiver circuit card 1 interfaces between the TECMAR base board card (not shown) and three bidirectional chips on card 1 having eight I/Os each for a total of 24 I/Os per card to connect to an external device. Card 1 plugs directly into the connectors of the TECMAR base board which, in turn, plugs into the PC (not shown) to provide asynchronous two-way communication. * Trademark of Tecmar Inc., Personal Computer Products Division, Cleveland, Ohio.

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Personal Computer Buffer Card

A digital input/digital output device is utilized as an interface between a TECMAR* base board and an IBM Personal Computer (PC) to serve as a signal driver. The device's circuitry enables it to act as a high-powered, bi-state driver to drive more lines in those situations where more power is needed, e.g., tester, etc. The device works as follows. A Bidirectional Bus Transceiver circuit card 1 interfaces between the TECMAR base board card (not shown) and three bidirectional chips on card 1 having eight I/Os each for a total of 24 I/Os per card to connect to an external device. Card 1 plugs directly into the connectors of the TECMAR base board which, in turn, plugs into the PC (not shown) to provide asynchronous two-way communication. * Trademark of Tecmar Inc., Personal Computer Products Division, Cleveland, Ohio.

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