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A n h u i V o c a c t i o n a l amp。 T e c h n i c a l C o l l e g e o f I n d u s t r y amp。 T r a d e 畢 業(yè) 論 文 五路搶答器的設計 The design of the five road vies to answer first 所在 系 院: 電氣與信息工程 系 專業(yè)班級: 10級 機電 (1)班 學生學號: 2021350123 學生姓名: 史亞云 指導教師: 蔣靜瑚 201 年 月 日安徽工貿(mào)職業(yè)技術學院畢業(yè)設計(論文) I 摘 要 數(shù)字搶答器由主體電路與擴展電路組成。優(yōu)先編碼電路、鎖存器、譯碼電路將參賽隊的輸入信號在顯示器上輸出;用控制電路和主持人開關啟動報警電路,以上兩部分組成主體電路 [1]。通過定時電路和譯碼電路將秒脈沖產(chǎn)生的信號在顯示器上輸出實現(xiàn)計時功能,構成擴展電路。 單片機將很多任務交給了軟件編程去實現(xiàn),大大簡化了外圍硬件電路,使外圍電路的實現(xiàn)簡單方便。 對于搶答器我們大家都知道那是用于選手做搶答題時用的,選手進行搶答, 搶到題的選手來回答問題。搶答器不僅考驗選手的反應速度同時也要求選手具備足夠的 知識面和一定的勇氣。選手們都站在同一個起跑線上,體現(xiàn)了公平公正 原 則。 關鍵 詞 : 搶答電路 定時電路 報警電路 The design of the five road vies to answer first Abstract Formed by the main circuit and expansion circuit digital preemptive answer. Priority encoding decoding circuit, latch, input signal on the monitor output of the team。 start alarm circuit and host switch control circuit, more than twopart main circuit. By timing pulse generation circuit and decoding circuitry second signal output on the monitor implementation of timing functions, constitute the extended circuit. SCM has many tasks to the software program to achieve greatly simplifies external hardware circuits, peripheral circuit implementation is simple and convenient. Preemptive answer is we all know that it is for the player to do when you get to answer, players for preemptive answer, grab players to answer questions of a problem. Preemptive answer test player reaction not only speed but also requires a player with a lot of knowledge and a certain amount of courage. Players are on the same starting line, embodies the principles of fair and equitable. Keywords: Preemptive answer circuit timing circuit alarm circuit 目 錄 摘 要 I ABSTRACT II 第 1章 概述 1 單片機搶答器的用途 1 搶答器的應用 1 第 2章 系統(tǒng)設計 2 設計要求 2 搶答器設計 183