徐 州 工 程 学 院 课 程 设 计 (论 文 )
目 录
1 绪论…..........................................................................................................................................1
1.1 LED 点阵显示屏的设计背景及意义…..............................................................................1
1.2 显示原理及控制方式分析..................................................................................................3
1.2.1 LED 点阵模块结构......................................................................................................3
1.2.2 LED 动态显示原理.....................................................................................................4
1.2.3 LED 常见的控制方式..................................................................................................4
1.3 设计目标及采取的方案.....................................................................................................5
1.3.1 本设计的目标.............................................................................................................5
1.3.2 本设计采取的方案.....................................................................................................5
2 系统硬件设计..............................................................................................................................5
2.1 AT89C51 芯片的介绍..........................................................................................................6
2.2 74LS154 芯片的介绍..........................................................................................................6
2.3 点阵式汉字 LED 显示屏设计.............................................................................................7
2.3.1 16*16 点阵 LED 原理及应用......................................................................................7
2.3.2 LED 点阵的显示文字图形原理..................................................................................8
3.字模生成....................................................................................................................................10
3.1 字模简介............................................................................................................................10
3.2 LED 显示屏领域字模实现技术..........................................................................................10
3.3 字模存储技术简介............................................................................................................11
4 系统软件设................................................................................................................................11
4.1 程序设计............................................................................................................................11
5 调试与仿真................................................................................................................................12
5.1 仿真效果............................................................................................................................12
5.2 调试中出现的问题............................................................................................................12
结论................................................................................................................................................12
参考文献........................................................................................................................................14
附录................................................................................................................................................14
附录 1 16*16 的点阵图文显示屏的硬件原理图.........................................................................14
附录 2 完整程序.....................................................................................................................14
