The design of LED display screen by means of dynamic scanning is introduced. The display principle and date latch of display screen and interface circuit of driver as well as application program chart are given. 本文设计了一种采用单片机动态扫描控制的LED图文显示屏,文中给出了显示原理,显示屏的数据锁存、驱动接口电路、以及应用程序框图。