On one hand, the flying growth of Chinese economy and city change the osmosis of the process, drove market of LED big screen ceaseless enlarge look.
一方面，中国经济的飞速增长和城市化进程的渗透，推动了LED大屏幕市场不断扩容。
The design method of LED big screen scanning circuit is introduced, and the virtues of programmable logic device application on high-speed digital system are presented.
介绍了LED大屏幕扫描电路的设计方法，阐述了可编程逻辑器件在高速数字系统应用中的优点。
The paper introduced a kind of system based on the function of serial communication between the micro controller and PC. It can control a kind of big screen that made of LED.
介绍了一种利用PC机和单片机的串行口通信功能实现对LED大屏幕进行控制的系统。
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