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目 录
摘 要..................................................................................................................................I
Abstract...............................................................................................................................II
1 绪论 .................................................................................................................................1
1.1 课题研究的目的和意义.......................................................................................1
1.2 霓虹灯研究情况概述...........................................................................................2
1.3 论文主要研究内容...............................................................................................4
2 系统方案设计.................................................................................................................6
2.1 系统总体设计方案...............................................................................................6
2.2 通信模块的确定...................................................................................................7
2.3 显示模块与音乐模块的确定...............................................................................7
2.4 电源模块的确定...................................................................................................8
2.5 单片机控制部分的确定.......................................................................................8
3 AT89C51 单片机概述.....................................................................................................9
3.1 AT89C51 特性.......................................................................................................9
3.2 单片机最小应用系统...........................................................................................9
3.2.1 时钟电路.....................................................................................................9
3.2.2 复位电路...................................................................................................10
3.3 I/O 接口的扩展....................................................................................................11
3.4 掉电保护设计和硬件“看门狗” .........................................................................12
3.4.1 微处理器监控器 MAX690A 简介...........................................................12
3.4.2 电路工作原理...........................................................................................13
4 硬件部分的设计...........................................................................................................14
4.1 红外通信模块的设计.........................................................................................14
4.1.1 实现目标...................................................................................................14
4.1.2 元器件选型...............................................................................................14
4.1.3 电路设计...................................................................................................16
4.2 显示模块的设计.................................................................................................16
4.2.1 LED 数码管的显示原理 ...........................................................................16
4.2.2 显示方案及接线.......................................................................................18