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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，具有参考意义和实用价值
The method of data acquisition and extension of its serial interface using PC-E500 is described. The interface circuit diagram and communication software are introduced. The design based on the above principles and methods has been put into practical application. Reference meaning and practical value