【導(dǎo)讀】evaluationofscientificdevelopment.Naturesecuritytype--naturesecurityistomaintenancepeopleofhealthvaluefortarget,throughstrengtheningsecuritybasedmanagement,andriskmanagement,andequipmentmanagementandtechnolgysupervision,ensureproductioninthepeople,andreal,andsystem,andsystem,elementsecurityreliable,andharmonyunified,fulcontrolvariousagainstfactors,achievedthoughtnoslack,andmanagementnoemptydocumen

　　

【正文】 rice, stable performance, and easy to operate and carry, it is widely suitable for all types of schools and small groups as the calendar time points. KEY WORDS： Microcontroller, Timing, Scoring, Display, Interface 目錄 super vision in lar ge and m edium goods vehicle. A is est ablished lar ge vehicles and sm all vehicles classif icat ion management of m otor vehicle t est m ode, incr eased m edium van car, and danger ous goods t r ansport car, and school car t est pr oject。 I I is est ablished m otor vehicle t est r egulat or y plat f or m, achieved m ot or vehicle t est f ul pr ocess video, and data r emot e r egulat ory。 t hree is st rict ly m ot or vehicle ident if icat ion m anagement , equipped wit h unif ied of ident if icat ion equipm ent and t ool, using mobile ident if icat ion Ter minal, and law enf or cement r ecor ds inst r ument, t echnology ident if ication m eans. As t o 20XX year s J une 20 st atewide m ot or vehicle keep volum e f or 567,408 car, and last year ear lier t han growt h 75,814 car, gr owth 13. 36%。 t his year J anuary June, vehicles m anagement sect ion and license ar chives m anagem ent section t ot al accept ed t he m otor vehicle r egistr ation business 42,543 car t im es, which r egist ered r egistr ation 6, 905 car t im es, and t ransfer r egist r at ion 3, 592 car t im es, and change r egist r at ion 1033 car t im es, and m ort gage r egistr ation 696 car t im es, and cancellat ion r egistr ation 187 car t im es, and int o business 980 car tim es, and Ar chives cor r ect ions 81 pieces t im es, and issued t est qualif ied logo 25, 429 car t im es, and ot her vehicles business 3, 640 car t im es。 super vision Survey Section r elies on m ot or vehicle det ection r em ot e issued t est qualif ied logo sof twar e plat f or m supervision m ot or vehicle t est, and ident if ication sit uat ion 7418l iangci, invest igat ion m ot or vehicle except ion business 30 car t imes, his par ds business war ning 244 ar t icle, vehicles and dr iving people sound video r egulat ory screenshot s 1852 Zhang, checks m ot or vehicle ar chives 716 pieces t im es, and medium bus, and m edium above t ruck, and Of hazardous chem icals, vehicles and school buses and ot her key vehicle inspect ion r ecor d of 420. ( C) based on t heir own, and st rict adher ence t o defense, more cheating, f alse f alse f ugit ive suspects, r obbery suspect vehicles and t he I nt er cr ackdown. DMV f ul play t o t he f ir st line of Def ense posit ion cont r ol, investigat ing cheating, f ake ident if icat ion and r ober y suspect vehicles t hr ough oper at ional wor k, and caref uly examine t he document s and legal pr oof , check t raf fic violat ions, t raf fic accident s, t he f ugit ive suspect suspected vehicles and t heft t han t o wor k, f ur ther t ight car , dr iving m anagem ent business f or malit ies r eview pr ocedur es. . . Truck dr iver inf or mat ion m anagement plat f or m. Motor vehicles and t raf fic police depar t ment s, Stat e t ranspor t author it y t o f ur ther clarif y t he Division of labour , im plement ation r esponsibilt y, st r engt hen our colabor at ion and m anagement ogether , r einf orcing t he m anagement of dr iver s on which st r ongly synthet ic war far e and inf or m at ion war f are. 3 st r ict ly im plement ed. Fr om M ay 1 up, a is im plem ent ed plex r oad and bad weat her dr iving exam , cur rent ly DM V is ur ged cont r act ors part y in t r easur es dr iving school incr eased sim ulat ion Highway, and continuous ur gent det our s, and snow days, and wet sliding r oad, and bur st sit uat ion disposal, subj ect s I I f ield t o dr iving exam pr oj ect , is expect edIV 目 錄 前 言 .............................................................................................................................. 1 第 1 章 系統(tǒng)方案說(shuō)明 .................................................................................................. 2 167。 方案選擇 ........................................................................................................... 2 167。 籃球賽計(jì)時(shí)計(jì)分器設(shè)計(jì)的現(xiàn)狀 ............................................................. 2 167。 系統(tǒng)總體設(shè)計(jì)方案 .................................................................................. 2 167。 系統(tǒng)基本功能介紹 .......................................................................................... 3 第 2 章 系統(tǒng)硬件電路設(shè)計(jì) .......................................................................................... 6 167。 籃球賽計(jì)時(shí)計(jì)分電路原理圖 ......................................................................... 6 167。 籃球賽計(jì)時(shí)計(jì)分器電路工作過(guò)程 ................................................................. 6 167。 系統(tǒng)硬件電路組成 .......................................................................................... 6 167。 計(jì)時(shí)電路 .................................................................................................... 6 167。 計(jì)分電路 .................................................................................................. 14 167。 器件選擇及介紹 ............................................................................................. 18 167。 AT89C51 ................................................................................................... 18 167。 CD4511 芯片介紹 ................................................................................... 21 167。 CD4094 芯片的介紹 ............................................................................... 22 167。 74LS21 芯片介紹 .................................................................................... 23 第 3 章 軟件編程及調(diào)試 ............................................................................................ 25 167。 總體程序設(shè)計(jì) ................................................................................................. 25 167。 初始化程序設(shè)計(jì) ...............................................................................