csharp编写的一个串口工程，可以作为上位机软件想单片机发送指令，实现通信和控制的目的。-csharp project prepared by a serial port can be used as the PC software to microcontroller sends instructions, communications and control.

VC++/MFC做的串口通讯界面，可以实现接受和发送，能自动循环发送数据-VC++/MFC to do the serial communication interface, can be achieved to receive and send, to send data automatically cycle