pb9版本，COM端口通讯，使用MsComm32.ocx控件(PB9 version, COM port communication, use MsComm32.ocx control)

1、内含windows环境下串口收发通信源代码 2、开发环境VS2010 3、内含串口控件mscomm32.ocx及注册方法(1. Including the source code of serial communication in Windows Environment 2. Development environment VS2010 3. Embedded serial port control mscomm32.ocx and registration method)