说明：  8路数据采集器，有两个51单片机系统构成，控制端和采集端，两个51通过max485芯片进行串行通信。此为控制端源码；
(Rd 8 data acquisition system, both have 51 single-chip microcomputer system consists of control and collection of client-side, two 51 through max485 chip serial communication. Source for the control of the client )