用VC++编程写的一个程序，实现设备和PC机的串口通讯。

一个用VC API写的串口通讯程序，很适合初学者，能以此例程基础上设计更多功能的界面-One with VC API to write the serial communication program, it is suitable for beginners, this routine can be designed on the basis of the interface more features

一个用VC mscomm写的串口通讯程序，很适合初学者，能以此例程基础上设计更多功能的界面-One with VC mscomm to write the serial communication program, it is suitable for beginners, this routine can be designed on the basis of the interface more features