电子控制单元与Pc机的通讯也是由主单 片机通过串行通讯电路（Serial Communication Circuit， SCI）来完成的。电源模块部分负责向各个模块提供 各自所需要的电源形式。
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设计了PLC与PC机串行通讯口之间信号适配器硬件电路，包括输入接口电路、输出接口电路。
This research works out a design of signal adaptor circuit of serial communication port between PLC and PC, including input interface circuit and output interface circuit.
本文介绍了用于激光三维图像数据采集系统中的硬件数据补偿电路和实现高速串行通讯的RS - 422接口电路。
In this paper we mainly discuss the data compensating principle and its circuit accomplishment, RS-422 interface adaptor which are used in a high-speed data acquisition system.
整个系统可通过JTAG口和RS232串行通讯口进行现场编程烧录，能方便地调整电路的工作状态或实现硬件控制程序的升级、更新。
The JTAG port and the RS232 serial port are designed to program in-situ. In teams of them, it is easily to adjust the circuit's working parameters or to update the control program.
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