基于單片機(jī)的數(shù)字搶答器設(shè)計 全新設(shè)計 適用于大專本科的畢業(yè)設(shè)計 直接能用


摘 要
隨著科學(xué)技術(shù)的發(fā)展和普及，各種各樣的競賽越來越多，其中搶答器的作用也越來越重要。本文設(shè)計出以AT89S52單片機(jī)為核心的八路搶答器，采用了數(shù)字顯示器直接指示，自動鎖存顯示結(jié)果，并自動復(fù)位的設(shè)計思想,它能根據(jù)不同的搶答輸入信號，經(jīng)過單片機(jī)的控制處理并產(chǎn)生不同的與輸入信號相對應(yīng)的輸出信號，最后通過LED數(shù)碼管顯示相應(yīng)的路數(shù)，即使兩組的搶答時間相差幾微秒，也可分辨出是哪組優(yōu)先按下的按鍵，充分利用了單片機(jī)系統(tǒng)結(jié)構(gòu)簡單、功能強(qiáng)大、可靠性好、實用性強(qiáng)的特點。
【關(guān)鍵詞】搶答器  單片機(jī)   LED數(shù)碼顯示管      揚聲器。

Abstract
With the development of science and technology popularization, all kinds of competition is more and more, including the role of vies to answer first is more and more important. This paper designed AT89S52 SCM as the core to 8 vies to answer first regulator, with the digital display direct instructions, automatic lock to save shows the results, and automatic reset the design thought, it can according to different vies to answer first the input signal, the control of the single chip processing and produce different with the input signal corresponding output signal, and finally LED digital display through the corresponding because, even if the two groups of vies to answer first time is a few microseconds, also can distinguish which group is preferred press buttons, make full use of the single chip computer system structure is simple, powerful, reliability, and practicability of characteristics.
【Key Words】vies to implement  microcontroller  LED digital
   speaker .

目  錄
摘 要 I
Abstract I
目  錄 II
第一章  緒論 1
1.1課題設(shè)計的相關(guān)背景 1
1.2選題的目的和意義 1
第二章 搶答器總體方案 2
2.1數(shù)字搶答器設(shè)計的方案論證 2
2.2模塊選型 3
2.2.1單片機(jī)的選擇 3
2.2.2顯示器的選擇 4
第三章 硬件電路設(shè)計模塊 5
3.1總體設(shè)計 5
3.2模塊性能分析 5
3.2.1 AT89C52的簡介 6
3.2.2外部石英振蕩電路設(shè)計模塊 8
3.2.3復(fù)位電路的設(shè)計模塊 8
3.3 按鈕電路設(shè)計模塊 9
3.4 LED電路設(shè)計模塊 10
3.5 蜂鳴器電路設(shè)計模塊 11
第四章 系統(tǒng)軟件設(shè)計模塊 12
4.1主程序系統(tǒng)結(jié)構(gòu)圖 12
4.2程序流程圖 12
4.4 Proteus軟件仿真系列組圖 14
4.5小結(jié) 16
致  謝 17
參考資料 18
附錄 19
附錄1：八路搶答器程序清單 19
附錄2：設(shè)計圖紙 23