利用Mscommm控件的主要方法和事件，开发串口通信程序-The main use of Mscommm control methods, and events to develop serial communication program

简单的串口通信程序,适合初学者使用，包括窗口创建打开已经在接收显数据示-Simple serial communication procedures, suitable for beginners to use, including window to create open already in the receive data show significant