2024年4月18日发(作者：)

摘 要

LED显示屏具有使用寿命长、响应速度快、可视距离远、规格品种多、数

字化程度高、亮度高等特点，在信息显示领域已经得到了非常广泛的应用。它利

用发光二极管构成的点阵模块或像素单元，组成大面积显示屏。其显示方法有静

态显示和动态扫描显示。动态扫描显示耗用硬件资源少，但软件要不断处理，耗

CPU。静态显示虽然软件简单但硬件价格稍贵。LED显示屏主要包括发光二极

管构成的阵列、驱动电路、控制系统及传输接口和相应的应用软件。而驱动电路

设计的好坏，对LED显示屏的显示效果、制作成本及系统的运行性能起着很重

要的作用。

本文介绍了点阵式电子显示屏的硬件电路设计原理与软件设计方案，采用51

系列单片机芯片，得到了一个能同时显示8个汉字16×16的LED点阵式电子显

示屏。

关键词：LED显示屏 动态扫描 AT89S52 74HC595

ABSTRACT

The LED display monitor has the long of service life, quacking response speed, the

far of it’s visual range , many specification variety, high of the digitized, the

brightness higher characteristic. It in the information demonstrated the domain

already obtained the extremely widespread application. It lattice module or picture

element unit which constitutes using the light emitter, composes the big area display

monitor. It’s demonstration method has the static demonstration and the dynamic

scanning demonstration. The dynamic scanning demonstration consumes the

hardware resources to be few, but the software must process unceasingly, and

consumes CPU. Although the static state software for display is simple, the hardware

price is slightly expensive. The LED display monitor mainly include the array which

the light emitter diode constitutes , actuates the electric circuit ,the control system and

the transmission connection and the corresponding application software. But actuates

the circuit design the quality, to the LED display monitor demonstration effect, the

manufacture cost and the system performance characteristic is playing the very vital

role.

Key words: LED display monitor Dynamic scanning AT89S52 74HC595

目 录