基于单片机的交通信号灯控制系统设计

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1、目　录中文摘要·····································································································Ⅰ1.引言········································································································12.设计任务及思路·········································································

2、···············13.单片机·····································································································33.1单片机简介·····························································································33.2单片机基本结构·································································

3、····················33.3单片机硬件特性·····················································································34.芯片的选择······························································································44.174LS373以及74LS07芯片简介···························································

4、········44.238255芯片·······························································································54.2.18255可编程并行接口芯片简介·······························································54.2.28255可编程并行接口芯片方式控制字格式说明·········································54.3晶闸管··························

5、·········································································75.交通灯控制原理分析及方案论证·································································86.系统硬件设计···························································································96.1总体设计·····································

6、···························································96.2单片机最小系统······················································································96.2.1振荡电路·····························································································96.2.2复位电路·······························

7、····························································106.3显示及其驱动模块3·················································································116.3.1键盘与状态显示功能·····························