MSComm控件的初级使用。使用MSComm控件实现电脑的两个串口间的通信，可以下载个虚拟串口软件进行测试。-The primary use of the MSComm control. MSComm control the communication between two serial ports of the computer, you can download a virtual serial port software to test.

vs2008下用MFC的MSComm控件编写的串口通信程序，PC机与SIM5215E实现串口通信！-under vs2008 written with MFC MSComm control serial communication program, PC machine with SIM5215E of serial communication!