多功能数字钟 - 多功能数字钟

《多功能数字钟 - 多功能数字钟》由会员上传分享，免费在线阅读，更多相关内容在行业资料-天天文库。

1、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···············································31分频电路···················

2、··································3（1）48分频··················································3（2）1M分频··················································5（3）48M分频·················································52计时器设计··················································

3、·6（1）秒分计时··················································6（2）小时计时··················································6（318）整体计时··················································73动态显示电路·················································84校整电路·························

4、····························95整点报时电路·················································116闹钟电路·····················································13（1）闹钟电路··················································13（2）比较电路··················································14

5、（3）选择电路··················································16四结论·························································17参考文献························································17多功能数字钟18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，

6、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MultifunctionalDigitalColokAbstract：Multifunctionaldigitalcolokhasbeenthenecessarydigitalproduction,ithasmanyfunctions,suchasreset,holding,alarmclock,colorbel

7、landsoon..Forus,whoarelearningcommunicationengineering,todesignthemultifunctionaldigitalcolokistocombinethetheoryandprictice.Inthesametime,itcangiveussomediectionsthathowwecandowellintheprictice.Inaddition,whatwegainintheexperimentcanapplytoourstutyandworkinthefutu

8、re.Keywords:digitalcolok,counter,frequencydivision,dynamicdisplay,comparision,calibration一设计要求：（1）基本要求：1、能进行正常的时、分、秒计时功能；2、分别由六个数码管显示时分秒的计时；3、K1是