LED点阵汉字显示屏设计

封面

作者：PanHongliang

仅供个人学习

2013届本科毕业论文

（一号黑体居中）

LED点阵汉字显示屏地设计

院（系）名称物理与电子信息学院（小三号黑体）

专业名称物理学（小三号黑体）

学生姓名张三丰（小三号黑体）

学号090514111（小三号Times New Roman）指导教师何大壮教授（小三号黑体）

完成时间2013年5月8日（小三号黑体）

目录

摘要 (Ⅰ)

Abstract (Ⅱ)

第1章概述 (1)

1.1 LED点阵数码显示屏概述 (1)

1.1.1LED地简介 (1)

1.1.2点阵地概述 (1)

1.1.3LED点阵数码显示屏地前景和发展 (1)

第2章单片机地基础知识 (3)

2.1 单片机地简介 (3)

2.1.1 单片机地种类 (4)

2.1.2汇编语言及其优点 (4)

第3章系统硬件设计 (6)

3.1 硬件设计主框图 (6)

3.2 LED点阵数码显示屏地驱动原理 (6)

3.3 8*8LED点阵连接成数码显示屏地硬件连接 (7)

3.4单片机与74HC595地硬件连接 (7)

3.5 89S51单片机、显示模块及驱动模块地硬件连接 (7)

第4章软件设计 (9)

4.1 显示原理 (10)

4.1.1 LED地显示原理 (10)

4.1.2 点阵地显示原理 (11)

4.2 设计思路 (12)

4.3 16点点阵字库字模地提取 (12)

4.4 扫描输出框图 (14)

4.5 主程序流程图 (15)

4.6 逐字显示及从左到右滚动显示时地流程图 (17)

4.7 程序 (17)

第5章单片机地硬件与软件调试 (21)

5.1 硬件调试 (21)

5.2 软件调试 (21)

总结 (22)

致谢 (23)

参考文献 (24)

摘要

随着国民经济高速增长,对公众场合发布信息地需求日益强烈,LED显示屏地出现正好适应了这一市场形势,因而在LED显示屏地设计制造技术与应用水平上都得到了迅速地提高,生产也得到了迅速地发展,并逐步形成产业,成为光电子行业地新兴产业领域.本设计是为了实现单片机控制LED数码点阵显示模块从右到左滚动显示“九州光电科技”.它以单片机89S51为核心,以公司生产地1588双色点阵为显示模块,以移位寄存器74HC595实现点阵地列扫描.采用单片机汇编语言进行编程,通过编程控制各显示点对应LED阳极和阴极端地电平,就可以有效地控制各显示点地亮灭,所显示字符地点阵数据可以自行编写（即直接点阵画图）,也可从标准字库中提取.

关键词单片机键盘显示 LED 点阵移位寄存器Abstract With national economy high speed growing, to public the situation release the need of information day by day mightiness, LED manifestation hold of emergence at the right moment orientation this market situation, as a result at LED manifestation hold of design manufacturing technique and application level top all got quick of exaltation, produce also got quick of development, and gradually formation industry, become the newly arisen industry realm of photoelectron profession .This design is for the sake of realization list slice machine control LED figures point manifestation mold piece from right arrive left roll over manifestation"nine state light electricity science and technology".It take list slice the machine 89 S51 as core, with the company produce of 1588 pairs of color point is manifestation the mold piece scan by moving a the row which deposit the machine 74 HC595 a realization point.Adoption list slice the machine edit collected materials language to carry on plait distance and pass plait distance control each manifestation point rightness should LED anode and cathode carry of electricity even, can valid of control each manifestation point of bright put out, the character list show of point the data can write(namely direct point draw) by oneself, can also withdraw from the standard the word database.

Key word: List slice machine Keyboard and Display LED Point Move to

deposit a machine