基于单片机交通灯控制器目 录摘 要......................................................................................................................................................1第一章 概述..........................................................................................................................................21.1 设计思想..................................................................................................................................21.2 交通灯设计方案选择与论证..............................................................................................21.3 设计要求及目的.....................................................................................................................31.3.1 基本要求......................................................................................................................31.3.2 提高要求......................................................................................................................31.3.3 设计目的......................................................................................................................31.4 交通灯控制系统简要说明...................................................................................................4第二章 系统总体方案及硬件设计.................................................................................................52.1 主控芯片 AT89C51 单片机.................................................................................................52. 2 两位八段式数码管...............................................................................................................72.3 复位和时钟电路.....................................................................................................................92.4 其它元件的说明...................................................................................................................102.5 总电路的设计.................................................
