基于單片機(jī)的八路搶答器設(shè)計(jì)

電子機(jī)電論文編號(hào):JD840  論文字?jǐn)?shù):6592,頁數(shù):23

八路搶答器設(shè)計(jì)與實(shí)現(xiàn)

目錄
摘   要 I
Abstract I
1  引言 1
2 原理設(shè)計(jì) 1
3 硬件電路 1
3.1  AT89C51介紹 1
3.1.1 AT89C51主要特性 1
3.1.2管腳說明 2
3.1.3芯片擦除： 4
3.2  單片機(jī)最小應(yīng)用系統(tǒng) 4
3.3  報(bào)警電路 4
3.4  顯示電路 5
3.4.1 選擇顯示器件 5
3.4.2 顯示原理介紹 5
3.4.3 LED顯示與單片機(jī)連接圖 6
3.5  總體電路 6
4   軟件設(shè)計(jì) 8
5   結(jié)束語 9
參考文獻(xiàn) 10
謝   辭 11
附錄  八路搶答器程序 12

摘要：設(shè)計(jì)一個(gè)實(shí)現(xiàn)搶答功能的電路，能夠顯示最先搶答到的號(hào)數(shù)，并能實(shí)現(xiàn)倒計(jì)時(shí)和時(shí)間不夠時(shí)的報(bào)警功能。此搶答器電路設(shè)計(jì)原理簡單、功耗低、穩(wěn)定性好、反應(yīng)速度快和安裝方便。此搶答器所需的硬件只是一塊AT89C51芯片、數(shù)碼管和按鍵等，成本比較低，適用于許多場合。
關(guān)鍵詞：搶答器；AT89C51；程序控制

The Design and Realization of Eight-way Answering Device

Abstract: This provides an approach to design a circuit which owns the function of answering questions actively, displaying the number of the person who answers firstly and being able to countdown and alarm when the time for answering questions is almost up . This design of this circuit is very simple and consumes little power.But yet,it is very stable, responses quikly and an be installed easily. The design need are only a piece of AT89C51 chips, digital tabes buttons and so on,which cost very little and can be applied in many circumstances.
Keywords: Answer devices; AT89C51; Procedures control