目录
一、前言····························································1
二、实验内容及要求·················································1
三、实验过程·······················································1
3.1 方案选择······················································1
3.2 模块实现与仿真················································4
3.2.1 计时时钟···················································5
3.2.2 秒钟·······················································5
3.2.3 分钟·······················································6
3.2.4 时钟·······················································7
3.2.5 日·························································8
3.2.6 月························································10
3.2.7 年························································11
3.2.8 按键检测··················································14
3.2.9 一般显示··················································15
3.2.10 校时修改·················································17
3.2.11 闹钟·····················································19
3.2.12 切换显示·················································22
3.2.13 数码管驱动···············································27
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