【正文】 目 錄摘 要 .......................................................................................................................................................................IABSTRACT............................................................................................................................................................II1 引言 .......................................................................................................................................................................12 功能要求 ...............................................................................................................................................................13 方案論證與設(shè)計(jì) ...................................................................................................................................................1 控制部分的方案選擇 ....................................................................................................................................1 測(cè)溫部分的方案選擇 ....................................................................................................................................1 顯示部分的方案選擇 ....................................................................................................................................24 系統(tǒng)硬件電路設(shè)計(jì) ...............................................................................................................................................2 主控器 AT89C52 ..........................................................................................................................................2 時(shí)鐘電路 DS1302 .........................................................................................................................................3. DS1302 的性能特性 ..............................................................................................................................3 DS1302 數(shù)據(jù)操作原理 ...........................................................................................................................3 測(cè)溫電路的設(shè)計(jì) ............................................................................................................................................5 溫度傳感器工作原理 ............................................................................................................................5 DS18B20 與單片機(jī)的接口電路 .............................................................................................................8 顯示電路的設(shè)計(jì) ............................................................................................................................................9 鍵盤接口的設(shè)計(jì) ........................................................................................................................................105 系統(tǒng)程序的設(shè)計(jì) .................................................................................................................................................10 陽(yáng)歷程序設(shè)計(jì) ..............................................................................................................................................10 時(shí)間調(diào)整程序設(shè)計(jì) ......................................................................................................................................11 溫度程序設(shè)計(jì) ..............................................................................................................................................12 主程序 ..................................................................................................................................................12 讀出溫度子程序 ..................................................................................................................................12 溫度轉(zhuǎn)換命令子程序 ..........................................................................................................................12 計(jì)算溫度子程序 ..................................................................................................................................13 顯示數(shù)據(jù)刷新子程序 ...........................................................................................................................13６ 調(diào)試及性能分析 ...............................................................................................................................................13 調(diào)試步驟 ......................................................................................................................................................14 性能分析 ......................................................................................................................................................14７ 總結(jié) ...................................................................................................................................................................14參考文獻(xiàn) .................................................................................................................................................................14致 謝 .....................................................................................................................................................................14基于 51 單片機(jī)的電子萬(wàn)年歷的設(shè)計(jì)摘 要電子萬(wàn)年歷是單片機(jī)系統(tǒng)的一個(gè)應(yīng)用，由硬件和軟件相配合使用。硬件由主控器、時(shí)鐘電路、溫度檢測(cè)電路、顯示電路、鍵盤接口 5 個(gè)模塊組成。主控模塊用 AT89C5時(shí)鐘電路用時(shí)鐘芯片DS130顯示模塊用 LED 數(shù)碼管、溫度檢測(cè)采用 DS18B20 溫度傳感器、鍵盤接口電路用普通按鍵接上拉電阻完成；軟件利用 C 語(yǔ)言編程實(shí)現(xiàn)單片機(jī)程序控制。單片機(jī)通過時(shí)鐘芯片 DS1302 獲取時(shí)間數(shù)據(jù)，DS18B20 采集溫度信號(hào)送該給單片機(jī)處理，單片機(jī)再把時(shí)間數(shù)據(jù)和溫度數(shù)據(jù)送給74LS154 譯碼，然后通過三極管 C9015 放大驅(qū)動(dòng) LED 數(shù)碼管顯示陽(yáng)歷年、月、日、時(shí)、秒、鬧鐘、星期、溫度。關(guān)鍵詞 電子萬(wàn)年歷；單片機(jī)；溫度傳感器；時(shí)鐘；數(shù)碼顯示AbstractElectronic perpetual calendar which is an application of the singlechip processor system, is utilized by bining hardware and software. And Hardware is posed of five modules: Main control unit, clock circuit, temperature test circuit, display circuit, keyboard interface. Main control board adopts AT89S52, clock circuit adopts the DS1302 clock chip, display module adopts the LED digital tube, and temperature test adopts the DS18B20 temperature sensor, keyboard interface circuit is pleted by connecting ordinary button with pullu