一个用VB写的测试串口的工具,可以接受串口的返回信息,用来测试-write a VB serial testing tools can accept Serial return information used to test

wince系统下的MFC工具下编写的一个串口程序，可以测试多个串口，在串口之间可以发送和接收数据-MFC tool wince system prepared under a serial program, can test multiple serial ports, the serial port can send and receive data between

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