智能電子計(jì)時(shí)器系統(tǒng)-畢業(yè)論文設(shè)計(jì)

1、摘要本設(shè)計(jì)是以AT89S51單片機(jī)為核心實(shí)現(xiàn)的一個(gè)智能電子計(jì)時(shí)器系統(tǒng)。目前市場(chǎng)上的電子計(jì)時(shí)器，主要有基于NE555的電子計(jì)時(shí)器、基于脈沖的電子計(jì)時(shí)器以及基于AT89S51單片機(jī)的電子計(jì)時(shí)器三種。通過(guò)比較，本課題選擇了“基于AT89S51單片機(jī)的電子計(jì)時(shí)器”的設(shè)計(jì)方案。該方案利用了AT89S51單片機(jī)為主控芯片，實(shí)現(xiàn)了時(shí)間顯示、定時(shí)中斷以及記錄比分等功能。具有簡(jiǎn)單易操作、時(shí)間可以任意設(shè)定等優(yōu)點(diǎn)，適合目前人們對(duì)智能小家電的需求。本設(shè)計(jì)主要從

2、總體設(shè)計(jì)、硬件設(shè)計(jì)、軟件設(shè)計(jì)、系統(tǒng)實(shí)現(xiàn)等方面來(lái)對(duì)智能電子計(jì)時(shí)器進(jìn)行詳細(xì)的介紹。硬件主要由顯示模塊、按鍵模塊、復(fù)位模塊、晶振電路等組成；軟件是用C語(yǔ)言編程，再利用Keil軟件進(jìn)行仿真，最后將軟硬件結(jié)合起來(lái)實(shí)現(xiàn)電子計(jì)時(shí)器的功能。本設(shè)計(jì)主要是完成定時(shí)時(shí)功能，該計(jì)時(shí)器系統(tǒng)簡(jiǎn)單易操作，定時(shí)時(shí)間也較長(zhǎng)，適合在999秒以內(nèi)的定時(shí)，比如豆?jié){機(jī)、榨汁機(jī)等的定時(shí)。關(guān)鍵詞關(guān)鍵詞：AT89S51，LED數(shù)碼管，電子計(jì)時(shí)器，C語(yǔ)言2.1.2電子計(jì)時(shí)器的工作原理及

3、組成.................................................................................22.2AT89S51單片機(jī)的簡(jiǎn)介........................................................................................................32.2.1AT89S51功能特

4、性概述................................................................................................32.2.2AT89S51的引腳圖及說(shuō)明............................................................................................4第三章系統(tǒng)的總體

5、設(shè)計(jì).................................................................................................................83.1方案比較.................................................................................................

6、..............................83.2功能設(shè)計(jì)............................................................................................................................103.3功能實(shí)現(xiàn)流程...............................................

7、.....................................................................10第四章硬件設(shè)計(jì).........................................................................................................................124.1單片機(jī)最小系統(tǒng).........

8、........................................................................................................124.2電子計(jì)時(shí)的功能模塊......................................................................................................

9、...144.3繼電器模塊..........................................................................................................................144.4按鈕模塊............................................................................

10、..................................................154.5顯示模塊..............................................................................................................................16第五章軟件設(shè)計(jì)..........................

11、...............................................................................................195.1C語(yǔ)言簡(jiǎn)介...................................................................................................................

12、......195.2軟件模塊規(guī)劃....................................................................................................................205.3程序?qū)崿F(xiàn)..............................................................................

13、..............................................215.3.1程序的功能模塊..........................................................................................................225.3.2主程序設(shè)計(jì)..........................................

14、........................................................................225.3.3中斷程序設(shè)計(jì)..............................................................................................................235.3.4其他子程序的設(shè)計(jì)..........

15、............................................................................................24第六章系統(tǒng)實(shí)現(xiàn).......................................................................................................................