At last, the communication program applied in Master-Slave control system base on MODBUS protocol is designed.

最后设计应用于主从式控制系统的通讯程序，这个程序是基于MODBUS协议的。

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Secondly, Single-Chip computer system soft design under host and slave mode of CH375 is introduced, and the paper shows the flow chart, the program design in detail and some codes.

其次，介绍了CH375主从模式下单片机系统软件设计，并给出了部分源代码和程序流程图；

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The drive program and the system managing function of PC are completed, the management and inspection of slave computer are realized by using Windows Driver Model (WDM) and VC developing environment.

运用WDM 驱动模式和VC 开发环境完成了PC 机端硬件的驱动和系统管理功能，并实现了对下位机的监测和管理。

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As we reported in our last program, slavery supporters failed to push through Congress a bill to make Kansas a slave state.

VOA: special.2009.05.28