本程序主要通过VC实现计算机与西门子S7－200间的串口通讯。-this program primarily through VC Computer and Siemens S7-200 serial port communications.

基于vc++6.0的远程LED屏显示系统，通过串口将设置要显示的数据、和屏幕滚动方式、速度、等-Based vc++6.0 remote LED screen display system, the data to be displayed will be set through the serial port, and the screen scrolling way, speed, etc.