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.......11..................422交通灯控制线路图.................12.................423系统工作原理135控制器的软件设计.....................13.....................51每秒钟的设定.....................13.....................52计数器的硬件延时14521计数器初值计算.....................................14522计算公式...........................................14523设置1秒的方法.....................................14524相应代码程序.......................................1553软件延时.......................16.......................54时间及信号灯的显示175418031并行口扩展..................17..................
f542显示原理.....................17.....................5438255输出信号的放大...............17...............5448255输出信号与信号灯的连接............17............5458255与8031的连接.................18.................55程序设计...............................................19551流程图19552程序源代码216看门狗硬件电路设计....................27....................61软件看门狗2762硬件看门狗287结论.....................................................318致谢32参考文献............r
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