自己使用VB编写的串口通信程序，1号和2号。将两个COM口用串口线连接，就可以运行这两个程序了。实现的功能：1号程序随机发送两个数字，2号程序接收并进行计算，然后发回1号机，1号机接收并显示出来。-its own use VB prepared by the serial communication program, 1 and 2. The two COM ports with serial line connectivity, it can run on the two proceeding

VB与分布式监控光盘源代码 数字输入及输出-VB and CD-ROM distributed source code control the import and export figures

串口效验接收中断协议，接收数据在串口回送。-Serial communication. Be able to complete the next-bit machine on the host computer sent signals 1-9 to respond, LED can be bright, digital display corresponding figures