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1、毕业设计题目基于单片机的音乐数字钟的设计与仿真42基于单片机的音乐数字钟的设计与仿真摘要近年来随着计算机在社会领域的渗透和大规模集成电路的发展，单片机的应用正在不断地走向深入，由于它具有功能强,体积小，功耗低，价格便宜，工作可靠，使用方便等特点，因此特别适合于与控制有关的系统，越来越广泛地应用于自动控制，智能化仪器，仪表，数据采集，军工产品以及家用电器等各个领域，单片机往往是作为一个核心部件来使用，在根据具体硬件结构，以及针对具体应用对象特点的软件结合，以作完善。单片机是单片微型计算机的简称，随着制造集成电路技术的发展可以将完成计算机功能的零部件集成在一个芯片上。这样的一个芯片就具有计算
2、机的全部或大部分功能，称为单片机微型计算机，简称单片机。关键词单片机/设计/开发/调试42MusicbasedonsinglechipmicrocomputerdigitalclockdesignandsimulationABSTRACTInrecentyears,alongwiththecomputerpenetrationinthefieldofsocietyandthedevelopmentoflargescaleintegratedcircuit,SCMapplicationsareconstantlygo,becauseithasstrongfunction,smallvolu
3、me,lowpowerconsumption,cheap,reliablework,convenientuse,etc,thereforeparticularlysuitableforrelatedtothecontrolsystem,moreandmorewidelyusedinautomaticcontrol,intelligentinstruments,meters,dataacquisition,militaryproductsandhouseholdappliancesandotherfields,themicrocontrollerisoftenusedasacorecomp
4、onent,inaccordingtothespecifichardwarestructure,andincombinationwiththesoftwareaccordingtothecharacteristicsofthespecificapplicationobject,tobeimproved.Microcontrollerisshortforsinglechipmicrocomputer,withthedevelopmentofintegratedcircuittechnologymanufacturingcompletecomputerfunctionsofcomponent
5、scanbeintegratedonachip.Suchachiphasallormostofthefunctionofthecomputer,knownasthesinglechipmicrocomputer,referredtoas"singlechipmicrocomputer.KEYWORDSSCM,design,development,debugging42目录摘要············································1ABSTRACT········································21课题介绍·········
6、·····························51.1单片机与单片机系统·······················52单片机系统的硬件设计2.1系统构成2.1.1AT89C51芯片的介绍·····················62.1.2引脚功能·······························92.2显示部分2.2.1LED显示器42·····························92.2.2LED数码显示管的基本原理··············92.2.3数码管显示模块分析···················112.3键盘··········
7、·····························132.474LS245简介································182.5蜂鸣器····································193控制部分电路的设计3.1系统复位设置····························203.2数字时钟的设计··························213.3音乐模块42·
