目 录
1 引 言................................................................................0
2 设计任务和要求.................................................................1
3 系统模块功能关系设计........................................................2
4 电路设计计算与分析...........................................................3
4.1 时钟脉冲信号.............................................................................3
4.2 主状态控制电路.........................................................................3
4.3 信号灯驱动电路.........................................................................5
4.4 计时器电路................................................................................6
4.4.1 百进制计数器电路................................................................................................ 6
4.4.2 置数端开关信号与主控器脉冲信号输出电路.....................................................7
4.4.3 由主控器状态控制的置数信号输入.....................................................................7
4.5 计时器显示电路.......................................................................10
4.6 总电路图仿真...........................................................................10
5 焊接与调试......................................................................11
6 心得体会.........................................................................12
参考文献...........................................................................13
附 录................................................................................. 14
附录 A 元件清单表..........................................................................14
附录 B 芯片管脚图.........................................................................16
附录 C 实物图................................................................................18
实物图如图 22、图 23 所示.............................................................18
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