16x64 LED点阵汉字显示屏的设计

16x64-LED点阵汉字显示屏的设计

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16X 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 emitting 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 LEDelectronic display screen.

The machine to the United States of America ATMEL company production of 40 feet 80C51 MCU as the 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 is 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

第一章绪论

1.1 1.2 1.3 1.4 课题背景. ... 国内外研究现状选题目的及意义生产需求状况.

第二章第三章1.5 LED 电子显示屏概述 ........... 系统方案设计与论证...............

2.1 数据传输方案.................

2.2 系统硬件方案.................

2.2.1 单片机 .............

2.2.2 EDA 电子设计自动化系统硬件的设计.............................

3.1 3.2

第四章

目录

电路原理图. .................

系统硬件概述. ...............

3.2.1 80C51 单片机简介.

3.2.2 译码器及点阵显示屏元件清单.

显示原理及控制方式分析........

3.4.1 LED 点阵模块结构. ..

3.4.2 LED 动态显示原理..

3.4.3 LED 控制方式. ......

系统软件的设计.....................

4.1

3.3

3.4

系统程序的设计. ....................

4.1.1 显示驱动程序 ...............

4.1.2 系统主程序 .................

程序流程图. ........................

字模生成. ..........................

4.3.1 LED 显示屏领域字模实现技术

4.3.2 字库生成....................

4.4 Keil 软件调试 ........................

4.5 Protues 仿真. .......................

4.2

4.3

总结........... 附录：程序代码

参考文献...... 致谢...........

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