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本文介绍了通用微机和单片微机在共同控制某一测量过程时的通讯接口问题，介绍了一种两机通讯时数据总线的切换及同步方法。
This article introduces the communication interface problem when the common microcomputer and the single chip microcomputer control a certain measurement process together. The paper introduces a method of switching and synchronizing the data bus in two-machine communication.