发明授权
US5604916A Controlling device for switching serial communication port and light communication port and its driving method 失效
串行通信端口和光通信端口切换控制装置及其驱动方法

Controlling device for switching serial communication port and light
communication port and its driving method
摘要:
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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