毕业设计-基于51单片机数字电压表的设计

基于51单片机数字电压表的设计目录一、系统总体方案选择与说明111设计要求112设计思路113设计方案1二、硬件电路设计221AT89C51的功能介绍2211简单概述2212主要功能特性3213AT89C51的引脚介绍322ADC0808的引脚及功能介绍5221芯片概述5ADC0808芯片模型5222引脚简介5223ADC0808的转换原理6224ADC0808的内部结构6225ADC0808电路接线图623显示电路7231LM016L的结构及功能7232LM016L的引脚功能介绍7233LM016L的电路接线图1324复位电路设计1325振荡电路设计14三、软件设计与说明10四、系统仿真与调试12五、总结13参考文献14附录15附录A系统原理图15附录B程序清单16一、系统总体方案选择与说明11设计要求（1）使用51单片机,AD0809,数码管等元件组成（2）能测量05V的直流电压（3）能连续、稳定显示所测电压（4）测量误差999UINUMBER999UCANUMBER0UINUMBER/100/把计算数字的每个位存入数组。UCANUMBER1UINUMBER100INTUCANUMBER0/10UCANUMBER2UINUMBER100INTUCANUMBER010UCANUMBER1FORUCCOUNT0UCCOUNTVWRITEDATA0X27BREAKCASEVWRITEDATA0X28BREAKCASEVWRITEDATA0X29BREAKCASEVWRITEDATA0X20BREAKCASEVWRITEDATA0X2ABREAKCASEVWRITEDATA0X2DBREAKCASE/VWRITEDATA0X2FBREAKCASEVWRITEDATA0X3DBREAKCASE/AD转换函数DEFINESTARTP3_4/SATART，ALE接口。010启动AD转换。DEFINEEOCP3_3/转换完毕由0变1DEFINEOUTPORTP2/AD转换函数，返回转换结果。/转换结果是3位数，小数点在百位与十位之间。UNSIGNEDINTUIADTRANSFORMUNSIGNEDINTUIRESULTSTART1/启动AD转换。START0WHILEEOC0/等待转换结束。UIRESULTOUTPORT/出入转换结果。UIRESULT100UIRESULT/51/处理运算结果。RETURNUIRESULT电气信息学院课程设计评分表评价项目优良中及格差设计方案的合理性与创造性软件设计完成情况硬件调试完成情况设计说明书与设计图纸质量答辩情况独立工作能力完成任务情况出勤情况综合评分指导教师签名_日期_设计内容与设计要求设计内容设计一个简易数字电压表，设计内容包括1使用51单片机,AD0809,数码管等元件组成2能测量05V的直流电压3能连续、稳定显示所测电压4测量误差002V）设计要求1）确定系统设计方案；2）进行系统的硬件设计3）完成必要的参数计算与元器件选择；4）完成应用程序设计；5）进行软硬件调试；主要设计条件1单片机开发板2PC机3PROTEL软件4PROTEUS软件说明书格式1课程设计任务书2目录3系统总体方案选择与说明4系统结构框图与工作原理5各单元硬件设计说明及计算方法6软件设计与说明（包括流程图）7调试结果与必要的调试说明8使用说明9程序清单10、总结11、参考文献附录附录A系统原理图附录B程序清单GANEMPLOYMENTTRIBUNALCLAIEMPLOYMENTTRIBUNALSSORTOUTDISAGREEMENTSBETWEENEMPLOYERSANDEMPLOYEESYOUMAYNEEDTOMAKEACLAIMTOANEMPLOYMENTTRIBUNALIFYOUDONTAGREEWITHTHEDISCIPLINARYACTIONYOUREMPLOYERHASTAKENAGAINSTYOUYOUREMPLOYERDISMISSESYOUANDYOUTHINKTHATYOUHAVEBEENDISMISSEDUNFAIRLYFORMOREINFORMATIONABOUTDISMISSALANDUNFAIRDISMISSAL,SEEDISMISSALYOUCANMAKEACLAIMTOANEMPLOYMENTTRIBUNAL,EVENIFYOUHAVENTAPPEALEDAGAINSTTHEDISCIPLINARYACTIONYOUREMPLOYERHASTAKENAGAINSTYOUHOWEVER,IFYOUWINYOURCASE,THETRIBUNALMAYREDUCEANYCOMPENSATIONAWARDEDTOYOUASARESULTOFYOURFAILURETOAPPEALREMEMBERTHATINMOSTCASESYOUMUSTMAKEANAPPLICATIONTOANEMPLOYMENTTRIBUNALWITHINTHREEMONTHSOFTHEDATEWHENTHEEVENTYOUARECOMPLAININGABOUTHAPPENEDIFYOURAPPLICATIONISRECEIVEDAFTERTHISTIMELIMIT,THETRIBUNALWILLNOTUSUALLYACCEPTIIFYOUAREWORRIEDABOUTHOWTHETIMELIMITSAPPLYTOYOU,TAKEADVICEFROMONEOFTHEORGANISATIONSLISTEDUNDERFURTHERHELPEMPLOYMENTTRIBUNALSARELESSFORMALTHANSOMEOTHERCOURTS,BUTITISSTILLALEGALPROCESSANDYOUWILLNEEDTOGIVEEVIDENCEUNDERANOATHORAFFIRMATIONMOSTPEOPLEFINDMAKINGACLAIMTOANEMPLOYMENTTRIBUNALCHALLENGINGIFYOUARETHINKINGABOUTMAKINGACLAIMTOANEMPLOYMENTTRIBUNAL,YOUSHOULDGETHELPSTRAIGHTAWAYFROMONEOFTHEORGANISATIONSLISTEDUNDERFURTHERHELPIFYOUAREBEINGREPRESENTEDBYASOLICITORATTHETRIBUNAL,THEYMAYASKYOUTOSIGNANAGREEMENTWHEREYOUPAYTHEIRFEEOUTOFYOURCOMPENSATIONIFYOUWINTHECASETHISISKNOWNASADAMAGESBASEDAGREEMENTINENGLANDANDWALES,YOURSOLICITORCANTCHARGEYOUMORETHAN35OFYOURCOMPENSATIONIFYOUWINTHECASEIFYOUARETHINKINGABOUTSIGNINGUPFORADAMAGESBASEDAGREEMENT,YOUSHOULDMAKESUREYOURECLEARABOUTTHETERMSOFTHEAGREEMENTITMIGHTBEBESTTOGETADVICEFROMANEXPERIENCEDADVISER,FOREXAMPLE,ATACITIZENSADVICEBUREAUTOFINDYOURNEARESTCAB,INCLUDINGTHOSETHATGIVEADVICEBYEMAIL,CLICKONNEARESTCABFORMOREINFORMATIONABOUTMAKINGACLAIMTOANEMPLOYMENTTRIBUNAL,SEEEMPLOYMENTTRIBUNALSTHELACKOFAIRUPTHEREWATCHMCAYMANISLANDSBASEDWEBB,THEHEADOFFIFASANTIRACISMTASKFORCE,ISINLONDONFORTHEFOOTBALLASSOCIATIONS150THANNIVERSARYCELEBRATIONSANDWILLATTENDCITYSPREMIERLEAGUEMATCHATCHELSEAONSUNDAY“IAMGOINGTOBEATTHEMATCHTOMORROWANDIHAVEASKEDTOMEETYAYATOURE,“HETOLDBBCSPORT“FORMEITSABOUTHOWHEFELTANDIWOULDLIKETOSPEAKTOHIMFIRSTTOFINDOUTWHATHISEXPERIENCEWAS“UEFAHASOPENEDDISCIPLINARYPROCEEDINGSAGAINSTCSKAFORTHE“RACISTBEHAVIOUROFTHEIRFANS“DURINGCITYS21WINMICHELPLATINI,PRESIDENTOFEUROPEANFOOTBALLSGOVERNINGBODY,HASALSOORDEREDANIMMEDIATEINVESTIGATIONINTOTHEREFEREESACTIONSCSKASAIDTHEYWERE“SURPRISEDANDDISAPPOINTED“BYTOURESCOMPLAINTINASTATEMENTTHERUSSIANSIDEADDED“WEFOUNDNORACISTINSULTSFROMFANSOFCSKA“AGEHASREACHEDTHEENDOFTHEBEGINNINGOFAWORDMAYBEGUILTYINHISSEEMSTOPASSINGALOTOFDIFFERENTLIFEBECAMETHEAPPEARANCEOFTHESAMEDAYMAYBEBACKINTHEPAST,TOONESELFTHEPARANOIDWEIRDBELIEFDISILLUSIONMENT,THESEDAYS,MYMINDHASBEENVERYMESSY,INMYMINDCONSTANTLYALWAYSFEELONESELFSHOULDGOTODOSOMETHING,ORWRITESOMETHINGTWENTYYEARSOFLIFETRAJECTORYDEEPLYSHALLOW,SUDDENLYFEELSOMETHING,DOIT一字开头的年龄已经到了尾声。或许是愧疚于自己似乎把转瞬即逝的很多个不同的日子过成了同一天的样子；或许是追溯过去，对自己那些近乎偏执的怪异信念的醒悟，这些天以来，思绪一直很凌乱，在脑海中不断纠缠。总觉得自己自己似乎应该去做点什么，或者写点什么。二十年的人生轨迹深深浅浅，突然就感觉到有些事情，非做不可了。THEENDOFOURLIFE,ANDCANMEETMANYTHINGSREALLYDO而穷尽我们的一生，又能遇到多少事情是真正地非做不可DURINGMYCHILDHOOD,THINKLUCKYMONEYANDNEWCLOTHESARENECESSARYFORNEWYEAR,BUTASTHEADVANCEOFTHEAGE,WILLBEMOREANDMOREFOUNDTHATTHOSETHINGSAREOPTIONALJUNIORHIGHSCHOOL,THOUGHTTOHAVEACRUSHONJUSTMEANSTHATTHEREALGROWTH,BUTOVERTHEPASTTHREEYEARSLATER,HISWRITINGOFALUMNIINPEACE,SUDDENLYFOUNDTHATISNTREALLYGROWUP,ITSEEMSISNOTSOIMPORTANTTHENINHIGHSCHOOL,THINKDONTWANTTOGIVEVENTTOOUTYOURINNERVOICECANBEINTHEHIGHSCHOOLCHILDRENOFTHEFEELINGSINAPERIOD,BUTWASEVENTUALLYINFARCTIONWHENGRADUATIONPARTYINTHETHROAT,LATERAGAINSTOODONTHEPITCHHEHASSWEATPROFUSELY,LOOKEDATHISTHROWNABASKETBALLHOOPS,SUDDENLYFOUNDHIMSELFHASALREADYCANTREMEMBERHISAPPEARANCE童年时，觉得压岁钱和新衣服是过年必备，但是随着年龄的推进，会越来越发现，那些东西根本就可有可无；初中时，以为要有一场暗恋才意味着真正的成长，但三年过去后，自己心平气和的写同学录的时候，突然就发现是不是真正的成长了，好像并没有那么重要了；然后到了高中，觉得非要吐露出自己的心声才能为高中生涯里的懵懂情愫划上一个句点，但毕业晚会的时候最终还是被梗塞在了咽喉，后来再次站在他曾经挥汗如雨的球场，看着他投过篮球的球框时，突然间发现自己已经想不起他的容颜。ORIGINALLY,THISWORLD,CANPRODUCEACHEMICALREACTIONTOANEVENT,INADDITIONTORESOLUTELY,HAVETODO,ANDTIME原来，这个世界上，对某个事件能产生化学反应的，除了非做不可的坚决，还有，时间。APERSONSTIME,YOURIDEASAREALWAYSSPECIALTOCLEARWANT,WANT,LINEISCLEAR,ASIFNOTHINGCOULDSHAKEHISALSOONCESEEMEDTOBEDETERMINEDTODOSOMETHING,BUTMOREOFTENISHEBACKEDOUTATLASTDISLIKEHISCOWARDICE,FINALLYFOUNDTHATTHEREAREALOTOFLOVE,THEREAREALOTOFMISS,LIKESHADOWREALLYHAVEBEENDOOMEDTHOSEWHODO,JUSTGREENYEARSONESELFGIVEONESELFANARMINJECTION,ORISASELFRIGHTEOUSSPIRITUAL一个人的时候，自己的想法总是特别地清晰。想要的，不想要的，界限明确，好像没有什么可以撼动自己。也曾经好像已经下定了决心去做某件事，但更多的时候是最后又打起了退堂鼓。嫌恶过自己的怯懦，最终却发现有很多缘分，有很多错过，好像冥冥之中真的已经注定。那些曾经所谓的非做不可，只是青葱年华里自己给自己注射的一支强心剂，或者说，是自以为是的精神寄托罢了。ATTHEMOMENT,THESKYISDARK,THEAIRISFRESHFACTORAFTERJUSTRAINEDSUDDENLYTHOUGHTOFBLUEPLAIDSHIRTTHOSEWEREBROKENINTOVARIOUSSHAPESOFSTATIONERYFROMTHECORNERATTHEBEGINNINGOFDEEPFRIENDSHIPHAVEDECLAREDTHEENDOFTHEENCOUNTERTHATHAVENTSTARTPLANNINGTHOSEYEARS,THOSEDAYSOFDO,FINALLY,LIKEYOUTH,WILLENDINOURLIFE此刻，天空是阴暗的，空气里有着刚下过雨之后的清新因子。突然想到那件蓝格子衬衫；那些被折成各种各样形状的信纸；那段从街角深巷伊始的友谊；还有那场还没有开始就宣告了终结的邂逅计划那些年那些天的非做不可，终于和青春一样，都将在我们的人生中谢幕。BAUMGARTNERTHEDISAPPOINTINGNEWSMISSIONABORTEDRPLAYSANIMPORTANTROLEINTHISMISSIONSTARTINGATTHEGROUND,CONDITIONSHAVETOBEVERYCALMWINDSLESSTHAN2MPH,WITHNOPRECIPITATIONORHUMIDITYANDLIMITEDCLOUDCOVERTHEBALLOON,WITHCAPSULEATTACHED,WILLMOVETHROUGHTHELOWERLEVELOFTHEATMOSPHERETHETROPOSPHEREWHEREOURDAYTODAYWEATHERLIVESITWILLCLIMBHIGHERTHANTHETIPOFMOUNTEVEREST55MILES/885KILOMETERS,DRIFTINGEVENHIGHERTHANTHECRUISINGALTITUDEOFCOMMERCIALAIRLINERS56MILES/917KILOMETERSANDINTOTHESTRATOSPHEREASHECROSSESTHEBOUNDARYLAYERCALLEDTHETROPOPAUSE,ECANEXPECTALOTOFTURBULENCETHESUPERSONICDESCENTCOULDHAPPENASEARLYASSUNDATHEWEATHETHEBALLOONWILLSLOWLYDRIFTTOTHEEDGEOFSPACEAT120,000FEETTHEN,IWOULDASSUME,HEWILLSLOWLYSTEPOUTONTOSOMETHINGRESEMBLINGANOLYMPICDIVINGPLATFORMBELOW,THEEARTHBECOMESTHECONCRETEBOTTOMOFASWIMMINGPOOLTHATHEWANTSTOLANDON,BUTNOTTOOHARDSTILL,HELLBETRAVELINGFAST,SODESPITETHEDISTANCE,ITWILLNOTBELIKEDIVINGINTOTHEDEEPENDOFAPOOLITWIL