计算机串行通信接口的结构及其故障排除

Structure and Failures Maintenance of Computer Asychronous Communication Interface

串行通信是计算机之间，计算机与仪器仪表和其它电子装置之间最常用的一种通信方式。其接口标准RS－232C已为国际公认。本文对目前常用的几种串行通信接口的电路结构进行分析，并根据笔者应用、维修RS—232C接口的经验，给出了几种常见故障的分析与排除方法。

Asynchronous communication is a general communication method between computers,and computers with instruments or electronic devices. Their standard interface RS- 232c has been accepted worldwide. Analyzing electronic structures of some common asynchronous communication interfaces, the author, with experience of RS - 232c application and maintenance, gives out analyzing and solving methods for several common failures.