1、 基于单片机的点阵汉字显示屏的设计 摘 要 LED 点阵显示屏作为一种新兴的显示器件 ,是由多个独立的 LED 发光二极管封装而成 . LED 点阵显示屏可以显示数字或符号 , 通常用来显示时间、速度、系统状态等。 本设计是 4个 16 16点阵 LED 电子显示屏的设计。整机以美国 ATMEL 公司生产的 40脚单片机 80C51为核心，介绍了以它为控制系统的 LED 点阵电子显示屏的动态设计和开发过程。通过该芯片控制一个行驱动器 74LS138和八个列驱动器 4049来驱动显示屏显示。该电子显示屏可以显示 4个汉字，采用 16块 8 x 8点 阵 LED 显示模块来组成 4个 16x16点
2、阵显示模式。显示采用动态显示，使得文字能够实现静止显示方式。文中详细介绍了 LED 点阵显示的硬件设计思路、硬件电路各个部分的功能及原理、相应软件的程序设计，以及使用说明等。 关键词： 80C51单片机 ； LED； 点阵显示 ； 动态显示 The design of display Chinese characters based on MCU Abstract LED dot matrix display as a new display device, is composed of multiple independent package from the LED light emitt
3、ing diodes. LED dot matrix display can display numbers or symbols, usually used to display time, speed, the system state. This design is the design of 4 16 * 16 dot-matrix LED electronic display screen. The machine to the United States of America ATMEL company production of 40 feet 80C51 MCU as the
4、core, introduces the dynamic design and the development of its control system for LED dot matrix display process. The chip controls good driver 74LS138 and eight row driver 4049 to drive the display screen to display. The electronic screen can display 4 Chinese characters, using the display module i
5、s composed of 4 16x16 dot matrix display mode 16 blocks of 8 x 8 dot matrix LED. Shows the dynamic display, making the text to achieve a static display mode. This paper introduces in detail the LED dot matrix display hardware design, hardware circuit of each part of the function and principle, the corresponding software program design, as well as the use and so. Keywords: 80C51； LED； dot matrix display； dynamic display
