United States of 40 feet ATMEL pany produces microcontroller AT89C51 as the core,
introduces taking it as a control system of LED dot matrix electronic display dynamic
design and development process. Through the chip control a line drive 74LS154 and eight
column drive 74HC595 to drive the screen shows. The electronic display screen can show
various text or monochrome images, full screen can show four Chinese characters, using
16 block 8 x 8 lattice LED display module to constitute 4 16x16 dot matrix display mode.
Display using the dynamic display, make graphics or text can realize static, move move out
of and so on many kinds of showing the way.This article from the LED display principle,
expounds the process of dynamic display of LED, and hardware circuit design, software
flowchart.
Keywords:Ddynamic Display;MCUSerial ;Data Transfer
第一章 概 述
1.1 引言
LED 电子显示屏〔Light Emitting Diode Panel〕是由几百--几十万个半导体发光
二极管构成的像素点,按矩阵均匀排列组成。利用不同的半导体材料可以制造不
同色彩的 LED 像素点。目前应用最广的是红色、绿色、黄色。而蓝色和纯绿色 LED
的开发已经到达了实用阶段。 LED 显示屏是一种通过控制半导体发光二极管的亮