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1、單片機(jī)數(shù)字時(shí)鐘設(shè)計(jì)目錄1.引言··························································22.關(guān)鍵詞························································23.內(nèi)容摘要······················································24.設(shè)計(jì)內(nèi)容····················································
2、··24.1任務(wù)書(shū)······················································24.2設(shè)計(jì)思路電路原理框圖········································34.3軟件設(shè)計(jì)方面················································44.4硬件設(shè)計(jì)方面················································4225主要元器件的概述··········
3、····································46.仿真實(shí)現(xiàn)·····················································76.1引腳連接（電路連接圖）···································76.2仿真結(jié)果（電路原理圖）···································86.3PCB圖··················································9
4、6.4實(shí)驗(yàn)操作················································97.元件清單·····················································108.程序附錄·····················································13總結(jié)··························································20參考文獻(xiàn)···········
5、···········································2022【引言】高精度的計(jì)時(shí)工具大多數(shù)都使用了石英晶體振蕩器，由于電子鐘、石英表、石英鐘都采用了石英技術(shù)，因此走時(shí)精度高、穩(wěn)定性好、使用方便、不需要經(jīng)常調(diào)校。數(shù)字電子時(shí)鐘，自從它發(fā)明的那天起，就成為人類的朋友，是人們?nèi)粘Ｉ钪斜夭豢缮俚谋匦杵罚瑥V泛用于個(gè)人家庭以及車站、航站、劇院、辦公室等公共場(chǎng)所，給人們的生活、學(xué)習(xí)、工作、娛樂(lè)帶來(lái)極大的方便。但隨著時(shí)間的推移，科學(xué)技術(shù)的不斷發(fā)展，生活節(jié)奏越來(lái)越快，競(jìng)爭(zhēng)日益激烈，人們對(duì)時(shí)
6、間計(jì)量的精度要求越來(lái)越高，應(yīng)用越來(lái)越廣。【內(nèi)容摘要】本實(shí)驗(yàn)采用LCD液晶屏作為顯示系統(tǒng)，以STC89C51單片機(jī)為核心，由液晶顯示屏，鍵盤(pán)，電容電阻，晶振等元器件組成。所組成的模塊能夠?qū)嶒?yàn)時(shí)，分，秒的數(shù)據(jù)顯示，通過(guò)程序設(shè)計(jì)運(yùn)用四個(gè)按鍵SB0，SB1，SB2，SB3能夠?qū)崿F(xiàn)對(duì)數(shù)字時(shí)鐘時(shí)間的設(shè)置和調(diào)整。本實(shí)驗(yàn)將寫(xiě)好的軟件燒錄到單片機(jī)中，通過(guò)單片機(jī)來(lái)實(shí)現(xiàn)，是實(shí)驗(yàn)的電路圖更加簡(jiǎn)單明了，系統(tǒng)穩(wěn)定性大大提高?！娟P(guān)鍵詞】單片機(jī)，數(shù)字時(shí)鐘，中斷，定時(shí)，匯編任務(wù)書(shū)設(shè)計(jì)題目：?jiǎn)纹瑱C(jī)數(shù)字時(shí)鐘設(shè)計(jì)主要內(nèi)容與目標(biāo)：1：通過(guò)單片機(jī)內(nèi)
7、定時(shí)器控制走時(shí)，準(zhǔn)確持續(xù)走時(shí)，調(diào)時(shí)不影響走時(shí)；2：在LCD上顯示時(shí)，分，秒；3：通過(guò)五個(gè)按鍵能夠?qū)r(shí)間進(jìn)行設(shè)定和調(diào)整。具有的設(shè)計(jì)基本條件：1：PC機(jī)一臺(tái)；2：STC89C51單片機(jī)一塊；3：KeilC調(diào)試環(huán)境、Proteus仿真軟件，Protel畫(huà)圖軟件。計(jì)劃設(shè)計(jì)進(jìn)程：1：明確課題對(duì)程序功能，運(yùn)算精度等方面的要求及硬件條件2：把復(fù)雜問(wèn)題分解為若干模塊，確定各模塊處理方法，畫(huà)出流程圖。3：編制程序，根據(jù)流程圖精心選擇合適的指令和尋址方式來(lái)編制源程序4：對(duì)程序進(jìn)行匯編，調(diào)試和修改，直到程序運(yùn)行結(jié)果正確為止。2
8、25：購(gòu)買器材，連接、制作硬件；6：將軟件功能在硬件上得到實(shí)現(xiàn)，做出數(shù)字鐘實(shí)物。設(shè)計(jì)思路電路原理框圖：初始化LCD顯示賦值時(shí)鐘芯片賦初值是定鬧鐘程序取時(shí)鐘否送顯示鍵按下.軟件設(shè)計(jì)方面:1：采用模塊化程序結(jié)構(gòu)設(shè)計(jì)軟件，首先將整個(gè)軟件分成若干功能模塊；222：根據(jù)設(shè)計(jì)原理圖編寫(xiě)程序；3：通過(guò)keil軟件編寫(xiě)調(diào)試程序；4：與硬件一起聯(lián)調(diào)，最后完成全部調(diào)試工作。硬件設(shè)計(jì)方面：1：將整個(gè)硬件系統(tǒng)劃分為若干單元電路，繪出整個(gè)邏輯電路，注明
