Industrial personal computers (IPC) are used as the host and slave computers. RS-485 network communication is controlled by 7521 intelligent module.
采用工业PC (IPC)作为上下位机，并使用7521智能模块来控制RS- 485网络进行通信。
For the software, it mainly studies the implementation of contact-less IC card read-write course, the design of communication protocol between read-write module and host computer.
在软件方面重点研究了非接触式IC卡读写过程的实现，读写器与上位机的通讯协议设计。
For the software, it mainly studies the implementation of contact-less IC card read-write course, the design of communication protocol between read-write module and host computer.
在软件方面重点研究了非接触式IC卡读写过程的实现，读写器与上位机的通讯协议设计。
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