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用單片機(jī)內(nèi)部定時(shí)器實(shí)現(xiàn)的數(shù)字鐘_智能測控儀器設(shè)計(jì)(已修改)

2025-07-24 19:27 本頁面
 

【正文】 “ 智能測控儀器設(shè)計(jì) ” 課程 項(xiàng)目 設(shè)計(jì)總結(jié)報(bào)告 項(xiàng)目 名稱: 用單片機(jī)內(nèi)部定時(shí)器實(shí)現(xiàn)的數(shù)字鐘 指導(dǎo)老師: 學(xué) 號(hào): 專業(yè) 年級(jí) : 完成 時(shí)間 : 20xx 年 7 月 1 用單片機(jī)內(nèi)部定時(shí)器實(shí)現(xiàn)的數(shù)字鐘 摘要: 近年來隨 著計(jì)算機(jī)在社會(huì)領(lǐng)域的滲透和大規(guī)模集成電路的發(fā)展,單片機(jī)的應(yīng)用正在不斷地走向深入,由于它具有功能強(qiáng),體積小,功耗低,價(jià)格便宜,工作可靠,使用方便等特點(diǎn),因此特別適合于與控制有關(guān)的系統(tǒng),越來越廣泛地應(yīng)用于自動(dòng)控制,智能化儀器,儀表,數(shù)據(jù)采集,軍工產(chǎn)品以及家用電器等各個(gè)領(lǐng)域,單片機(jī)往往是作為一個(gè)核心部件來使用,在根據(jù)具體硬件結(jié)構(gòu),以及針對(duì)具體應(yīng)用對(duì)象特點(diǎn)的軟件結(jié)合,以作完善。本文介紹了基于單片機(jī) AT89C51 的數(shù)字鐘的設(shè)計(jì),詳細(xì)討論了它從軟件上實(shí)現(xiàn)的過程,重點(diǎn)在時(shí)鐘調(diào)整的方式:查詢和中斷的比較,然后,對(duì)數(shù)字鐘的穩(wěn) 定性和精確性作了相關(guān)的討論。在文章的最后,給出了采用中斷方式實(shí)現(xiàn)的數(shù)字鐘的源程序。本次設(shè)計(jì)通過對(duì)一個(gè)時(shí)鐘顯示、手動(dòng)校時(shí)等功能的時(shí)間系統(tǒng)的設(shè)計(jì),其中結(jié)合了 LCD1602 顯示、單片機(jī)定時(shí)中斷等技術(shù)。 關(guān)鍵詞 : 單片機(jī)的應(yīng)用 ,AT89C51,LCD 2 Abstrct: In recent years along with puter peration in the social sphere and the large scale integrated circuit development, MCU applications are constantly deepening, because it has strong function, small volume, low power consumption, low price, reliable work, so that the use is convenient wait for a characteristic, thus it is especially suitable for and control of relevant system, more and more widely and its application in automatic control, intelligent instruments, instrumentation, data acquisition, military products and household appliances and other fields, the microcontroller is often used as a core ponent to use, in accordance with the specific hardware structure, and the specific characteristics of the target application software node, to make perfect. This article introduced based on the singlechip digital clock design, discussed in detail from the software implementation process, heavy in the clock adjustment way: queries and disruption of parison, and then, on the digital clock made of the stability and accuracy of closed the discussion. At the end of the article, gives the interrupt mode to achieve digital clock source. This design through to a clock display, manual school functions when the time system design, which bines the LCD1602 display, dynamic scanning, SCM timer interrupt technology. Key words: The application of MCU, AT89C51, LCD 3 1. 項(xiàng)目研究意義與研究現(xiàn)狀 數(shù)字鐘是采用數(shù)字電路 實(shí)現(xiàn)對(duì) .時(shí) ,分 ,秒 .數(shù)字顯示的計(jì)時(shí)裝置 ,與機(jī)械式時(shí)鐘相比具有更高的準(zhǔn)確性和直觀性,裝置,具有更長的使用壽命,已得到廣泛的使用。數(shù)字鐘的設(shè)計(jì)方法有許多種 ,例如 ,可用中小規(guī)模集成電路組成電子鐘;也可以利用專用的電子鐘芯片配以顯示電路及其所需要的外圍電路組成電子鐘;還可以利用單片機(jī)來實(shí)現(xiàn)電子鐘等等。這些方法都各有其特點(diǎn),其中利用單片機(jī)實(shí)現(xiàn)的電子鐘具有編程靈活,并便于功能的擴(kuò)展。數(shù)字鐘廣泛用于個(gè)人家庭 ,車站 , 碼頭辦公室等公共場所 ,成為人們?nèi)粘I钪胁豢缮俚谋匦杵?,由于數(shù)字集成電路的發(fā)展和石英晶體振蕩器的廣泛應(yīng)用 ,使得數(shù)字鐘的精度 ,遠(yuǎn)遠(yuǎn)超過老式鐘表 , 鐘表的數(shù)字化給人們生產(chǎn)生活帶來了極大的方便,而且大大地?cái)U(kuò)展了鐘表原先的報(bào)時(shí)功能。諸如定時(shí)自動(dòng)報(bào)警
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