毕业设计 led显示系统设计（终稿）

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1、西安电力高等专科学校计算机工程_系_2010届毕业设计（论文）题目：LED显示系统设计学号：姓名：专业：计算机控制技术专业班级：44071指导教师：完成时间：2010年6月日36目录摘要·······························································2第一章LED点阵显示的背景和控制技术状况··························21.1LED点阵显示的背景········································31.2LED

2、显示的控制技术状况····································3第二章开发环境简介·············································42.1单片机的发展··············································42.2STC89C52的硬件结构·······································52.2.1STC89C52芯片引脚介绍································

3、···52.2.2STC89C52单片机的存储器结构····························62.2.3STC89C52单片机的输入/输出端口··························82.2.4STC89C5236单片机的复位电路······························112.3VC6.0简介················································122.4KeilC51简介·······························

4、···············12第三章点阵汉字编码和汉字显示原理·······························163.1汉字字模··················································163.2汉字显示原理··············································17第四章LED显示系统硬件设计·····································184.1列扫描模块·····················

5、···························184.2硬件设计··················································19第五章LED显示系统软件的设计··································225.1设计流程·················································23365.2软件程序实现·············································23第六章程序下载调试

6、·············································32设计总结··························································35参考文献··························································36摘要随着电子信息技术和智能化的不断深入，人们的生活、工作等各个方面发生了巨大的变化。近些年，单片机的开发应用已成为高科技和工程领域的一项重要内容。因为它具有集成度高、体积小、功耗

7、低、控制功能强、速度快、抗干扰能力强、易于开发等诸多优点。因此，从导弹的导航装置到飞机上各种仪表的控制；从计算机的网络通讯与数据传输到工业自动化过程的实时控制和数据处理；以及我们生活中广泛使用的各种智能IC卡、电子宠物等都离不开单片机。在发达国家单片机技术开发应用发展很快，并取得了明显的经济效益和社会效益。在我国，单片机的应有进展也很快，特别是在工业控制、通信、智能化仪器、仪表、产品自动化、分布式控制系统中已取得了可喜的成果。36近几年来我国LED显示的相关技术也取得了较快和较大的发展，早期时曾因LED材料器件的限制，LE

8、D显示屏的应用领域没有广泛展开，另一方面，显示屏控制技术基本上是通信控制方式，客观上影响了显示效果。所以导致早期的LED显示屏在国内很少，产品以红、绿双基色为主，控制方式为通信控制，灰度等级为单点四级调灰，产品的成本比较高。后来LED显示屏迅速发展，进入九十年代，全球信息产业高速增长，信息技术各个领域不