This paper presents CH375 bus interface chips, the USB communication between PC and embedded medical equipment, and the relative procedure code.

介绍了USB总线接口芯片CH375，并在此基础上实现了PC与嵌入式医疗设备的USB通讯，给出了相关的程序代码。

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The design of CAN bus hardware interface circuit based on SJA1000, the selection of chips, the design of software and the realization of CAN communication are expatiated.

论述了基于SJA1000的CAN总线的硬件接口电路的设计、芯片的选择、软件设计及CAN通信的实现。

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