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1、目錄摘要.......................................................................................................................................................................IABSTRACT........................................

2、....................................................................................................................II1引言引言.................................................................................................

3、......................................................................12功能要求功能要求............................................................................................................................................

4、...................13方案論證與設計方案論證與設計...................................................................................................................................................13.1控制部分的方案選擇.........................

5、...........................................................................................................13.2測溫部分的方案選擇....................................................................................................

6、................................13.3顯示部分的方案選擇....................................................................................................................................24系統(tǒng)硬件電路設計系統(tǒng)硬件電路設計.........................

7、......................................................................................................................24.1主控器AT89C52........................................................................................

8、..................................................24.2時鐘電路DS1302.........................................................................................................................................34.2.1.DS1302的性能特性.

9、.............................................................................................................................34.2.2DS1302數(shù)據(jù)操作原理.............................................................................

10、..............................................34.3測溫電路的設計............................................................................................................................................54.3.1溫度傳感器工作原理........

11、....................................................................................................................54.3.2DS18B20與單片機的接口電路..................................................................................

12、...........................84.4顯示電路的設計............................................................................................................................................94.5鍵盤接口的設計...............................

13、.........................................................................................................105系統(tǒng)程序的設計系統(tǒng)程序的設計..................................................................................................

14、...............................................105.1陽歷程序設計..............................................................................................................................................105.2時間調(diào)整程序設計.......

15、...............................................................................................................................115.3溫度程序設計..................................................................................

16、............................................................125.3.1主程序..................................................................................................................................................125.

17、3.2讀出溫度子程序..................................................................................................................................125.3.3溫度轉(zhuǎn)換命令子程序................................................................

18、..........................................................125.3.4計算溫度子程序..................................................................................................................................135.3.5顯示數(shù)據(jù)刷新子程序..

19、.........................................................................................................................13６調(diào)試及性能分析調(diào)試及性能分析..................................................................................

20、.............................................................136.1調(diào)試步驟......................................................................................................................................................

21、146.2性能分析......................................................................................................................................................14７總結總結......................................................

22、.............................................................................................................14參考文獻參考文獻.....................................................................................................

23、............................................................14致謝............................................................................................................................................................

24、.........14IAbstractElectronicperpetualcalendarwhichisanapplicationofthesinglechipprocesssystemisutilizedbycombininghardwaresoftware.Hardwareiscomposedoffivemodules:Maincontrolunitclockcircuittemperaturetestcircuitdispla

25、ycircuitkeyboardinterface.MaincontrolboardadoptsAT89S52clockcircuitadoptstheDS1302clockchipdisplaymoduleadoptstheLEDdigitaltubetemperaturetestadoptstheDS18B20temperaturesenskeyboardinterfacecircuitiscompletedbyconnecting

26、dinarybuttonwithpullupresist.SoftwaretakesadvantageofCtoprogramsoastorealizetheprogrammedcontrolofsinglechipprocess.SinglechipprocessgetsthetimedatathroughusingtheDS1302clockchip.TheDS18B20gatherstemperaturesignalstransm

27、itsthemtosinglechipprocess.Thensinglechipprocesstransmitsthetimedatathetemperaturedatatothe74LS154decoder.LastlytheLEDdisplayssolarcalendaryearyearmonthdayhourminutesecondalarmclockweektemperaturewithbeingenlargeddrivenb

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