Controlling device for switching serial communication port and l

Details Controlling device for switching serial communication port and l Controlling device for switching serial communication port and l

1994-09-08

1997-02-18

Lee, Thomas C.

395750, G06F 900, G06F 1300, G06F 1310

Patent

active

056049161

ABSTRACT:
A switch controlling device for a serial communication port and a light communication port having an asynchronous communication part, a switch, a micro-controller, multiplexers, an EIA driver, and a light signal input/output part. The switch controlling device for the serial communication port and the light communication port is driven by a user selecting the serial communication port or the light communication port, after both the serial communication port and light communication port have been installed in a computer system.

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patent: 4937781 (1990-06-01), Lee et al.
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patent: 5005151 (1991-04-01), Kurkowski
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patent: 5297141 (1994-03-01), Marum
patent: 5416909 (1995-05-01), Long et al.
patent: 5444856 (1995-08-01), Bowers et al.
patent: 5486726 (1996-01-01), Kim et al.

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