本文详细分析了串行口通讯的基本方法,在此基础上介绍了语音自动告警系统的组成及实现方法。 [关键词] 模块 串行通讯 RS-232标准 中断 [Abstract]This paper analyses the basic method of the serial communication, introduces the compose of the system of automatic phonic alarm and how to achieve it. [keywords]module, serial communication,RS-232 standard, intermit