基于单片机的电子时钟设计-(带定时功能和温度显示)

基于单片机的电子时钟设计——带定时功能和温度显示班级:11级质量2班学号:1110132217姓名:詹超专业:产品质量指导老师:王正家二零一四年六月错误!未定义书签。摘要传统的数字电子时钟采用了较多的分立元器件，不仅占用了很大的空间而且利用率也比很低，随着系统设计复杂度的不断提高，用传统时钟系统设计方法很难满足设计需求。单片机是集CPU、RAM、ROM、定时器/计数器和多种接口于一体的微控制器。它体积小、成本低、功能强，广泛应用于智能产品和工业自动化上。而51系列的单片机是各单片机中最为典型和最有代表性的一种。，本次设计提出了系统总体设计方案，并设计了各部分硬件模块和软件流程，在用C语言设计了具体软件程序后，将各个模块完全编译通过过后,结果证明了该设计系统的可行性。该设计给出了以AT89C51为核心，利用单片机的运算和控制功能，并采用系统化LED显示模块实时显示数字的设计方案，适当地解决了实际生产和日常生活中对计时高精确度的要求，因此该设计在现代社会中具有广泛的应用性。关键词：电子时钟，单片机,C语言。AbstractConventionaldigitalelectronicclockUSESmorediscretecomponent,notonlytakesupalotofspacebutalsoutilizationratioislow,withtheconstantimprovementofthesystemdesigncomplexity,usingtraditionalclocksystemdesignmethodisdifficulttomeetthedesignrequirements.SCMisasetofCPU,RAM,ROMandtimer/counterandavarietyofinterfaceintheintegrationofmicrocontroller.Smallvolume,lowcost,strongfunction,itiswidelyusedinintelligentproductsandindustrialautomation.And51seriesmicrocontrolleristhesinglechipmicrocomputerinoneofthemosttypicalandmostrepresentative.,thedesignputforwardthesystemoveralldesignscheme,anddesignsthehardwaremodulesandsoftwareprocess,thepartsafterusingClanguagedesignaspecificsoftwareprogram,thevariousmodulesafterfullycompiledthrough,theresultsprovedthefeasibilityofthedesignsystem.ThisdesignUSESAT89C51asthenucleusispresented,thecalculationandcontrolfunctionofmicrocontroller,andUSESthesystematicdesignofreal-timedisplayofdigitalLEDdisplaymodule,appropriatesolutionstothepracticalproductionanddailylifetotherequirementofhighprecisiontiming,thereforethedesignhaswideapplicationinthemodernsociety.Keywords:Electronicclock,SCM,Clanguage。目录摘要..................................................................................................错误!未定义书签。ABSTRACT............................................................................................错误!未定义书签。第一章前言.......................................................................................................................1第二章方案论证与比较...................................................................................................22.1数字时钟方案...........................................................................................................22.2数码管显示方案.......................................................................................................2第三章系统设计...............................................................................................................33.1总体设计...................................................................................................................33.1.1系统说明.........................................................................................................33.1.2系统框图.........................................................................................................33.2模块设计...................................................................................................................33.2.1复位电路.........................................................................................................33.2.2按键调时间部分.............................................................错误!未定义书签。3.2.3温度采集部分.................................................................................................43.2.4数码管位选部分.............................................................................................43.2.5数码管段选部分.............................................................................................73.2.6数码管显示部分.............................................................................................83.2.7单片机控制部分.............................................................................................9第四章原理图与PCB图.................................................................................................114.1原理图.........................................................................................................................................114.2PCB图.........................................................................................................................................12第五章软件设计.............................................................................................................135.1程序流程图.............................................................................................................135.2源程序.....................................................................................................................16第六章总结.....................................................................................................................246.1物品清单与元件特性.............................................................................................246.2设计总结.................................................................................................................25参考文献（REFERENCES）：.......................................................................................261第一章前言计时工具自问世至今已经有很长一段历史了，一直以来它都在人们日常生活生产中发挥着十分重要的作用。科学技术的不断发展为各种新型时钟的问世提供了先决条件，数字时钟就是其中之一。数字时钟能够精确地表示时、分、秒，至今已经普遍应用到各类行业以及公共场所，时钟的数字化更为人们的生活带来了极大的便利，所以对时钟进行研究有着十分重要的现实意义。时