單片機(jī)數(shù)字鐘設(shè)計(jì)

目錄
摘要.............................................................................. - 1 -
目錄.............................................................................. - 3 -
引言.............................................................................. - 4 -
第一章 題目 ...................................................................... - 5 -
1.2、設(shè)計(jì)目的..................................................................... - 5 -
第二章  單片機(jī)發(fā)展歷史 ........................................................... - 5 -
2.1三大階段 .......................................................................- 5 -
2.2  如果將8位單片機(jī)的推出作為起點(diǎn) ............................................... - 6 -
2.3  單片機(jī)的發(fā)展趨勢(shì)............................................................. - 7 -
第三章  單片機(jī)的組成及特點(diǎn).........................................................- 9 -
3.1  單片機(jī)的組成..................................................................- 9 -
3.2  單片機(jī)的特點(diǎn)..................................................................- 9 -
3.3  單片機(jī)的分類  ...............................................................- 10 -
第四章 單片機(jī)的應(yīng)用 ..............................................................- 10 -
4.1單片機(jī)的應(yīng)用分類...............................................................- 10 -
第五章  數(shù)字種的構(gòu)成 .............................................................- 12 -
5.1  數(shù)字鐘的構(gòu)成 ................................................................- 12 -
5.2  實(shí)驗(yàn)中所需的器材.............................................................- 13 -
5.3  方案選擇與相關(guān)技術(shù)...........................................................- 13 -
5.4  AT89C51的單片機(jī)簡(jiǎn)介 .........................................................- 13 -
5.4.1  主要特性 ................................................................. - 15 -
5.4.2  管腳說(shuō)明...................................................................- 16 -
5.4.3  振蕩器特性 ................................................................- 20 -
5.4.5  單片機(jī)的中斷 ..............................................................- 22 -
5.5   CC4511 集成簡(jiǎn)介............................................................ - 25 -
5.5.1  4511集成分析...............................................................- 25 -
5.5.2  4511的邏輯圖...............................................................- 26 -
5.6   LED數(shù)碼顯示器簡(jiǎn)介.......................................................... - 26 -
5.6.1  LED數(shù)碼顯示器的結(jié)構(gòu) .......................................................- 27 -
5.6.2  LED數(shù)碼顯示器有兩種連接方法................................................- 27 -
第六章  電路設(shè)計(jì) .................................................................- 27 -
6.1 電路接法..................................................................... - 27 -
6.1.1  晶體振蕩器與AT89C51的接法..................................................- 27 -
6.1.2  單片機(jī)復(fù)位電路的連接...................................................... - 28 -
6.1.3  單片機(jī)AT89C51銀腳的連接 ...................................................- 28 -
6.1.4  譯碼器CC4511的銀腳連接 ....................................................- 29 -
6.1.5   CC4511與共陰極LED的連接方式...............................................- 29 -
6.2 數(shù)字鐘電路圖................................................................. - 29 -
第七章 調(diào)試過(guò)程...................................................................- 31 -
總結(jié)..............................................................................- 31 -
參考文獻(xiàn)......................................................................... - 32 -
致謝..............................................................................- 32 -
附錄一：C語(yǔ)言程序.................................................................- 32 -
附錄2:匯編程序 ...................................................................- 43 -

摘要
近年來(lái)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(lái)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(lái)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。
本次設(shè)計(jì)中以單片機(jī)的發(fā)展過(guò)程和發(fā)展方向?yàn)楸尘埃�介紹了單片機(jī)的輸入輸出的工作原理和操作方法，中斷的工作原理和操作方法。4511的工作原理和操作方法，LED的內(nèi)部結(jié)構(gòu)。電路設(shè)計(jì)及調(diào)試過(guò)程。
 本次做的數(shù)字鐘是以單片機(jī)（AT89C51）為核心，結(jié)合相關(guān)的元器件（共陰極LED數(shù)碼顯示器、BCD-鎖存/7段譯碼/驅(qū)動(dòng)器CC4511等），再配以相應(yīng)的軟件，達(dá)到制作簡(jiǎn)易數(shù)字鐘的目的，其硬件部分難點(diǎn)在于元器件的選擇、布局及焊接。
關(guān)鍵詞：?jiǎn)纹瑱C(jī)    AT89C51    共陰極LED數(shù)碼顯示器    BCD-鎖存/7段譯碼/驅(qū)動(dòng)器CC4511   
Abstract
In recent years, with computers in the infiltration and the development of large-scale integrated circuits.  SCM application is steadily deepening, as it has strong function, small size, low power dissipation, low prices, reliable, easy to use features, it is particularly suited to and control of the system, increasingly widely used in automatic control, intelligent instruments, gauges, data acquisition, military products and household appliances, and other areas, is often microcontroller as a core component to use, In light of specific hardware architecture, and application-specific software features object combine to make perfect.
The design of a microcontroller development process and the direction of development as the background, the computer's input and output of the working principle and method of operation interrupted the principle and method of operation. 4511, the principle and method of operation, LED internal structure. Circuit design and debugging process.
 The figures do bell on SCM (AT89C51) at the core, Combined with the components (a total of cathode LED digital display, BCD - latch /7 of decoding / actuator CC4511), and factoring in the corresponding software, Easy to produce digital clock purposes, as part of the hardware components is a difficult choice, layout and welding.
Keywords : Single Chip Microcomputer    AT89C51    Total cathode LED figures display    BCD-the lock save/7 the segments translate code/actuator CC4511