利用VC++实现串口间的通信使单片机和PC间能自由通信，通过上位机控制下位机进行通信。-Use of VC++ serial communication between the freedom of communication between the microcontroller and PC can communicate through the PC control the lower machine.

VC++的上位机通信程序。并带有图形界面，此程序是一个完整的工程可以直接使用，如果用于商业请先联系本人。-VC++ host computer communication program. With a graphical interface, this program is a complete project can be used directly for commercial please contact me first.