第1页共37页编号：时间：2021年x月x日书山有路勤为径，学海无涯苦作舟页码：第1页共37页目录摘要.......................................................................................................................................13abstract.........................................................................................................................................13引言............................................................................................................................................9第一章单片机的概述..........................................................................................................221.1单片机的概述...................................................................................................................11.2芯片简介............................................................................................................................11.2.1MSC-51芯片简介....................................................................................................41.2.28255芯片简介...........................................................................................................51.2.374LS373简介.............................................................................................................6第二章系统硬件设计............................................................................................................82.1交通管理的方案论证.....................................................................................................92.2单片机系统硬件设计...................................................................................................132.2.1单片机交通灯系统总框图...................................................................................182.2.2单片机交通灯硬件线路图...................................................................................222.2.3单片机交通灯系统工过程分析............................................................................9第三章控制器的软件设计....................................................................................................133.11秒内各时间段的分析设定.......................................................................................183.2计数器硬件延时............................................................................................................223.2.1计数器初值计算.......................................................................................................93.2.2计算公式...................................................................................................................13第2页共37页第1页共37页编号：时间：2021年x月x日书山有路勤为径，学海无涯苦作舟页码：第2页共37页3.2.31秒时间分析法.......................................................................................................183.2.4单位时间法的相应程序代码...............................................................................223.3单片机交通灯的软件延时............................................................................................93.4各时间段信号灯的显示...............................................................................................133.4.18051并行口的扩展................................................................................................183.4.2信号灯的显示原理.......................
