交通信号灯课程设计资料报告材料.doc

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1、目录1.前言········································································································22总体方案设计····························································································32.1方案论证与比较··································································

2、···············································32.2方案的选择·····················································································································53单元模块设计····························································································63.1各单元模块功能介绍及

3、电路设计···························································································63.1.1秒脉冲发生器··············································································································63.1.2定时器·····························································

4、··························································63.1.3控制器·······················································································································73.1.4译码电路···························································································

5、·························93.1.5显示电路···················································································································103.1.6总原理图··················································································································113.2特殊器件的介绍

6、···············································································································113.2.174LS160····················································································································113.2.274LS153································

7、····················································································123.2.374LS74······················································································································133.2.4CD4511··················································