目 录
绪论....................................................................................................................................................1
1.1 引言.....................................................................................................................................1
1.2 单片机的发展现状............................................................................................................2
第二章 基于单片机的 LED 广告牌原理..........................................................................................3
2.1 设计任务及要求..............................................................................................................3
2.2 工作原理..............................................................................................................................3
2.2.1 阵屏原理...................................................................................................................3
2.3.2 MCS-51 的引脚及相关功能.................................................................................5
第三章 方案选择..............................................................................................................................7
3.1 方案原理图：......................................................................................................................7
3.2 方案分析：..........................................................................................................................7
第四章 设计与仿真..........................................................................................................................8
4.1 软硬件设计..........................................................................................................................8
4.1.1 硬件设计...................................................................................................................8
4.1.2 软件设计...................................................................................................................9
4.2 绘制电路图及印刷板图....................................................................................................14
4.3 计算机仿真........................................................................................................................14
第五章 结论....................................................................................................................................16
致谢..................................................................................................................................................17
参考文献..........................................................................................................................................18
