目录
摘要及关键字······················································2
一设计要求······················································2
二整体电路·······················································2
三各子模块设计原理···············································3
1 分频电路·····················································3
(1)48分频··················································3
(2)1M分频··················································5
(3)48 M分频·················································5
2 计时器设计···················································6
(1)秒分计时··················································6
(2)小时计时··················································6
(3)整体计时
··················································7
3 动态显示电路················································· 8
4 校整电路····················································· 9
5 整点报时电路·················································11
6 闹钟电路·····················································13
(1)闹钟电路··················································13
(2)比较电路··················································14
(3)选择电路··················································16
四结论·························································17
参考文献························································17
多功能数字钟
摘要:多功能数字钟已经成了我们生活中必不可少的数字产品,它有多种功能,如清零、保持、闹钟、彩铃等等,给我们带来方便。对于我们通信工程专业的学生来说,设计这样一个数字钟不仅是把我们学过的理论与实践相结合,也教会我们实践中应该注意的问题,认识到理论与实践的差别,并把这些认识及体会应用到我们以后的学习和工作中。
关键字:数字钟,计时器,分频,闹钟,动态显示,比较,校准
Multifunctional Digital Colok
Abstract:Multifunctional digital colok has been the necessary digital production ,it has many functions,such as reset,holding,alarm clock,color bell and so on..For us,who are munication engineering,to design the multifunctional digital colok is bine the theory and the same time,it can give us some diections that how we can do well in the addition,what we gain in the experiment can apply to our stuty and work in the future.
Key words:
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