[畢業(yè)論文]分秒電子計(jì)時器

摘 要
　　　現(xiàn)在科技越來越發(fā)達(dá)，競爭越來越激烈，運(yùn)用時間越來越精密，電子時鐘的設(shè)計(jì)成為現(xiàn)在社會的一大熱門。由單片機(jī)為主設(shè)計(jì)的電子時鐘設(shè)計(jì),它由4按鍵輸入電路,時鐘電路,蜂鳴電路,復(fù)位電路,單片機(jī),LED顯示器段碼驅(qū)動電路,4位LED顯示電路所組成。本次設(shè)計(jì)單片機(jī)部分分別進(jìn)行了程序設(shè)計(jì),設(shè)計(jì)本身是為了讓大家熟悉自己所學(xué),把知識用于實(shí)際的過程,通過這個設(shè)計(jì),大家可以熟悉單片機(jī)各方面的優(yōu)點(diǎn),也是我選擇單片機(jī)完成本設(shè)計(jì)的原因,設(shè)計(jì)中,需要數(shù)電、模電、單片機(jī)、一些相關(guān)軟件的操作以及相關(guān)知識。

關(guān)鍵詞： 單片機(jī)；LED顯示器；AT89C2051；ULN2003
The electronic clock design
Abstrac
　　　The present science and technology to be more and more developed, The competition will more next month be intense, The time taken to deliver will be more and more precise, Electronic clock design into present society one big popular.Electronic clock design primarily designs which by the monolithic integrated circuit, it by 4 pressed key input circuit, the clock electric circuit, the buzzing electric circuit, repositions the electric circuit, the monolithic integrated circuit, the LED monitor section code actuation electric circuit, 4 LED display circuit composes.
This design monolithic integrated circuit part has carried on the programming separately, designs itself is in order to let everybody be familiar with oneself studies, uses in the knowledge the actual process, through this design, everybody may be familiar with the monolithic integrated circuit various aspects the merit, Also is I chooses the monolithic integrated circuit cost design the reason, In the design, needs to count the electricity, The mold electricity, the monolithic integrated circuit, Some correlation software operation as well as the related knowledge.
Key word: Monolithic integrated circuit; LED monitor; AT89C2051; ULN2003
 

目 錄
1 引 言 2
2 方案論證 3
3 硬件電路的設(shè)計(jì) 4
3.1 硬件電路的設(shè)計(jì)方案及框圖 4
3.3 時鐘電路的設(shè)計(jì) 5
3.4復(fù)位電路的設(shè)計(jì) 5
3.5 LED顯示電路設(shè)計(jì) 6
3.5.1 LED顯示器的選擇 6
3.5.2 LED的段驅(qū)動芯片的選擇 8
3.5.3 LED的位驅(qū)動芯片選擇 8
3.5.4 LED驅(qū)動電路和單片機(jī)的連接 8
3.6 按鍵電路 8
3.7 蜂鳴電路設(shè)計(jì) 9
3.8 電源部分 10
4 軟件設(shè)計(jì)方案 11
4.1 系統(tǒng)軟件設(shè)計(jì)方案框圖 11
4.2 主程序設(shè)計(jì) 11
4.2.1 主程序設(shè)計(jì)框圖 12
4.2.2 時鐘計(jì)時程序設(shè)計(jì)框圖 13
4.2.3 鍵盤接收子程序的設(shè)計(jì) 14
5 安裝與調(diào)試 15
5.1 系統(tǒng)硬件調(diào)試 15
5.2 軟件調(diào)試 15
總 結(jié) 16
致 謝 17
參 考 文 獻(xiàn) 18
附 錄電子時鐘原理圖………………………………………………………………19