【正文】 and car ef uly exam ine 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 s uspected vehicles and t hef t han t o wor k, f ur ther tight car, dr iving m anagement business f orm alit ies r eview pr ocedures. . . Tr uck dr iver inf orm at ion m anagement plat for m. Mot or vehicles and t r af 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 at ion r esponsibilt y, st rengt hen our colabor ation and m anagem ent t oget her, r einf or cing t he m anagement of dr iver s on which st rongly synthet ic war far e and inf orm at ion war f are. 3 st r ict ly im plement ed. From M ay 1 up, a is im plem ent ed plex r oad and bad weat her dr iving exam, cur ently DM V is ur ged contr actor s par ty in t r easures dr iving schol incr eased simulat ion Highway, and continuous ur gent det our s, and snow days, and wet sliding r oad, and bur st sit uation disposal, subjects I I f ield t o dr iving exam pr oj ect , is expect ed 基于 AT89C52 單片機(jī)的數(shù)字時(shí)鐘設(shè)計(jì) 摘 要 本文論述了如何利用單片機(jī)來設(shè)計(jì)一個(gè)時(shí)鐘的方法。 本設(shè)計(jì)基于單片機(jī)技術(shù)原理，以單片機(jī)芯片 AT89C52作為核心控制器，通過硬件電路的制作以及軟件程序的編制，設(shè)計(jì)制作出一個(gè)多功能數(shù)字時(shí)鐘系統(tǒng)。單片機(jī)擴(kuò)展的 LCD顯示器用來顯示秒、分、時(shí)計(jì)數(shù)單元中的值。整個(gè)設(shè)計(jì)包括兩大部分 : 硬件部分和軟件部分 ,以單片機(jī)為核心 , 配以一定的外圍電路和軟件。硬件是整個(gè)系統(tǒng)的基礎(chǔ) , 軟件部分則要合理、充分地支持和使用系統(tǒng)的硬件 , 從而完成系統(tǒng)所要完成的任務(wù)。 本設(shè)計(jì)采用 L ED 數(shù) 碼管的數(shù)字顯示以其亮度高、顯示直觀等優(yōu)點(diǎn)被廣泛應(yīng)用于智能儀器及家用電器等領(lǐng)域。該時(shí)鐘系統(tǒng)主要由時(shí)鐘模塊、鬧鐘模塊、環(huán)境溫度檢測模塊、液晶顯示模塊、鍵盤控制模塊以及信號提示模塊組成。能夠準(zhǔn)確顯示時(shí)間（顯示格式為時(shí)時(shí)：分分：秒秒， 24 小時(shí)制），可隨時(shí)進(jìn)行時(shí)間調(diào)整，具有鬧鐘時(shí)間設(shè)置、鬧鐘開 /關(guān)、止鬧功能，能夠?qū)r(shí)鐘所在的環(huán)境溫度進(jìn)行測量并顯示。設(shè)計(jì)以硬件軟件化為指導(dǎo)思想，充分發(fā)揮單片機(jī)功能，大部分功能通過軟件編程來實(shí)現(xiàn)，電路簡單明了，系統(tǒng)穩(wěn)定性高。 單片機(jī)在這種情況下誕生了 基于單片機(jī)電子時(shí)鐘 。 關(guān)鍵詞： 單片機(jī)、 LCD 顯示器 、 液晶顯示模塊 、 基于單片機(jī)電子時(shí)鐘 。 evaluat ion of scient if ic developm ent . Natur e secur it y t ype natur e securit y is t o m aint enance people of healt h value f or t arget , t hrough st rengthening secur it y based m anagement , and r is k m anagement , and equipm ent m anagement and t echnology super vision, ensur e pr oduction in t he people, and r eal, and syst em, and system, elem ent s secur it y reliable, and har m ony unif ied, f ul cont rol var ious against f actor s, achieved t hought no slack, and management no em pty document , and equipm ent no hidden, and syst em no blocked, and unit zer o nonst opped. Qualit y and ef f iciencyqualit y benef it is t o adhere t o t he enter prise survival, pr ofit and developm ent business t rut h, adher e t o t he all act ivit y is econom ic activit y, all cost s can be cont roled, m oney should not be wast ed m anagement philosophy, m anagement analysis, t o im prove management qualit y, im prove cost contr ol capacit y and m ar ket petit iveness. Innovation of science and t echnology science and t echnology innovat ion is t o play t he r ole of science and t echnology as t he pr im ar y pr oduct ive f orce, act ive use of new t echnologies, new m at er ials, new pr ocesses, new equipm ent , incr ease invest ment in science and t echnology, st rengthening scientif ic and t echnological t r aining, speeding up t ransfor ming scient if ic and t echnological achievement s, f or ming a num ber of pr opr ietar y technology, enhancing cor e petit iveness. Res our cesaving t he resources saving ent erpr ise was t o r educe coal consum pt ion, wat er consum ption, elect ricit y at t he cor e, enhance t he oper ation of lean m anagem ent t o r ealize low consumpt ion, high ef ficiency, r educe pr oduction cost s. Second is t o st rengthen t he business, f inancial, m ater ial, inf orm at ion and t he opt imizat ion of or ganizat ion and management, s aving t he int er nal t r ansact ion costs. Har m onious development of harm onious developm ent is t o const ruct a for eign envir onment f or development . XI NG ref ers t o t he int er nal secur it y f ir m and int er nal m anagement of t he int ernal m anagem ent m easur es ar e eff ect ive, har m onious. Foreign cur r ency m eans Ent er pr ise coordinat ing development of hom eopat hy, well, get along wit h t he neighbor s bett er. ( B) XX 2021 five ent er pr ises building int r insic saf ety power pany goals ar e: unplanned out age 0 t im es. Class of disor der s 0, 0 is equivalent f or ced outage r at e. No per sonal inj ur y accident , m ater ial and equipm ent accidents do not occur , no f ir e, no envir onm ental polut ion accident . Ent erpr ise int egrat ed t o achieve zero cases of violat ion, zero accidents, zer o. Qualit y goal is: when gener at ing capacit y ≥ 7. 5 bilon kilowat t , sales of over bilon kWh, t ot al pr of it s of ≥ 306. 6 m ilon Yuan, . . . BFS++、 PI、 MI S、 SCM I nfor mat ion syst ems inf rast ructur e, f uly int egr ated inf or mation system t o realize inf or mat ion r esour ces sharing。 t o expand t he br eadt h and depth of t he port al system, inf orm ation system of Ent erpr ise M anagement Assist ant r ole t o play。 t o im prove t he day to day oper at ion and m aint enance operat ion r ecor d of pr omot ing causes and t ransfer syst em。 t o st rengt hen t he t r aining南華大學(xué)電氣 工程學(xué)院單片機(jī)課程設(shè)計(jì) 第 1 頁 共 51 頁 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