介绍了用中规模集成电路数据选择器实现组合逻辑函数的三种方法：常用方法、扩展法、降维法。
This paper introduces three methods to realize composite logic function with medium - scale data selector: the common method, the expanding method and the dimension - reducing method.
该系统由多路复用的RS232、RS485串行接口电路及多路数据采集系统组成，具有结构简单、工作可靠、经济实用等特点。
This system consist of the MUX RS232, RS485and data acquisition system. It is characterized by simple construction, reliability service and economy.
该系统由多路复用的RS232、RS485串行接口电路及多路数据采集系统组成，具有结构简单、工作可靠、经济实用等特点。
This system consist of the MUX RS232, RS485and data acquisition system. It is characterized by simple construction, reliability service and economy.
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