VC++ 向指定串口发送和接收数据，可十六进制接收和发送，是一个串口调试程序。可以选择串口速率和串口号，设置发送和接收的数据编码-VC++ to specify the serial port to send and receive data, you can send and receive hexadecimal, is a serial debugger. Can select the serial port speed and serial number, set the encodin