中断在LED大屏幕显示系统中的应用

AN APPLICATION OF INTERRUPTION IN A LARGE SCREEN LED DISPLAY SYSTEM

介绍了在ＬＥＤ大屏幕显示系统中采用动态扫描通过中断方式输出数据的原理和方法，给出了有关的流程图．通过这种方式可大大减少硬件电路，降低成本．软件的控制也很灵活方便，整个系统扩展容易。

The princple and method of output data by dynamic scaning and interrupt model in a large screen LED display system are described,and the related flow diagrams are given.The circuit complexity is decreased and the cost is reduced by this method.The software control is convenient.The expansion of the system is easy.The newky developed system possesses good practiality.