基于 51 单片机的动态点阵 LED 汉字显示屏的设计 摘 要 LED 点阵显示屏是利用发光二极管点阵模块或像素单元组成的平面式显示屏幕，可以显示汉字、数字或特别符号，通常用来显示时间、速度、系统状态等。LED 点阵显示屏作为一种新兴的显示器件,现已广泛应用于广告、交通运输、教育系统、银行等工业企业管理和其它公共场所,产业面临良好的市场进展机遇及前景。本设计讨论了基于单片机AT89C51 的 8×8 点阵 LED 动态显示屏的设计与运用 Proteus 软件的仿真实现。具体介绍了设计的系统方案、LED 图形显示原理及应用、LED 汉字显示屏的硬件电路设计、汇编程序设计与调试、Proteus 软件仿真，软件流程图等内容。本设计主要以 AT89C51 为核心芯片，通过程序控制，采纳动态扫描技术，用 AT89C51 的 P0 口控制行驱动器 74LS245 和 P3口来直接驱动显示屏，在点阵 LED 显示屏上实现了汉字的动态显示。在负载范围内, 只需通过简单的级联就可以对显示屏进行扩展，来制作一款拥有多功能模块化的点阵 LED 的多功能显示屏，是一种成本低廉的图文显示方案。关键词：AT89C51 单片机；LED 点阵；动态扫描；Proteus 仿真软件Dynamic dot matrix LED Chinese characters display design Based on 51 Micro-controller ABSTRACT LED dot matrix display tis Planar display screen which is composed of light-emitting diode dot matrix module or pixel unit.LED dot matrix display can display Chinese characters, numbers, or special symbols, usually are used to display time, speed, and system status.LED dot matrix display is a new display devices, which is widely used in advertising, transport, education system, banks and other industrial enterprises and other public places now, and the industry is facing good opportunities for market development and prospects.The design studies that the 8 × 8 dot matrix LED dynamic display design based on AT89C51 Micro-controller and using Proteus software to simulate.Specifically designed system solutions, LED graphic display principle and application of LED Chinese characters display hardwa...
