摘要
阐述了利用ＰＣ－Ｅ５００机进行数据采集和对其串行接口进行扩展的方法，介绍了系统的接口电路原理图和通讯软件的编制，根据上述原理和方法所进行的设计已得到实际应用。
This article describes the methods of collecting data and expanding the serial port with PCE500 pocket computer. It introduces the electronic circuit diagrame of interfacing and the communication software. The design based on the above principles has been put into practice. It has some referential and practical value.
