多路智力竞赛抢答器

黄冈师范学院

本科生毕业论文

题目: 多路智力竞赛抢答器的设计专业班级：电子信息科学与技术2011级03班学号：************

学生姓名：***

指导教师：**

论文完成日期: 2015 年 5 月

郑重声明

本人的毕业论文是在指导老师刘珊的指导下独立撰写并完成的。毕业论文没有剽窃、抄袭、造假等违反学术道德、学术规范和侵权行为，如果有此现象发生，本人愿意承担由此产生的各种后果，直至法律责任；并可通过网络接受公众的查询。特此郑重声明。

毕业论文作者(签名)：

年月日

目录

1 绪论 (3)

1.1研究目的与意义 (3)

1.2研究内容 (3)

2电路原理设计 (4)

2.1 八路抢答电路设计 (6)

2.2定时电路设计 (9)

2.3声响电路的设计 (14)

3 Multisim仿真与制作 (16)

3.1抢答仿真 (16)

3.2定时抢答仿真 (18)

3.3超时抢答仿真 (19)

3.4仿真结果分析 (20)

结束语 (21)

附录 (22)

附录一：元件清单 (22)

附录二：总电路图 (23)

参考文献 (24)

致谢 (25)

基于数字电路多路智能竞赛抢答器原理与设计专业:电子信息科学与技术班级：电科1103 姓名：叶林飞指导老师：刘珊

摘要

随着社会的不断发展，对人才的要求更加急迫，而在高校同学们学科学、学技术、学知识的手段多种多样，知识竞赛之类的活动愈加频繁，而在竞赛中往往分为几组参加，这时针对主持人提出的问题进行抢答。如果要是让抢答者用举手等方法，会因为主持人的主观误断造成比赛的不公平性。比赛中为了准确、公正、直观地判断出第一抢答者，这就必然离不开抢答器。作为一种电子产品，在市场上很多，但价格昂贵，还不能根据具体情况修改一些参数，如答题时间设置，选手的增加等问题不好解决。为此根据实际需要设计了简易的数字抢答器，这样不仅节约成本，这样也能满足具体实际需要[1]。

本文介绍了一种同时供八位选手比赛的抢答器，本设计的数字抢答器由优先编码电路、锁存器、译码电路、显示电路、定时电路及用控制电路组成,能实现8位选手抢答,满足了学校同学们知识竞赛的要求。

关键词: 数字电路; 抢答电路；倒计时电路；报警电路；秒脉冲产生电路

The Principle and Design of Digital Circuit Based on Multi Intelligence Contest Responder

Speciality: Electronic Information Science and Technology Class: 1103

Author: Ye Lin-fei Tutor: Liu Shan

Abstract

With the continuous development of society, more and more urgent demand for talent, and in the college students learn science, science technology, many kinds of means of knowledge diversity, knowledge contest activities such as more frequent, and the competition is divided into several groups to participate in, then the answer to the issues raised by the host. If you let the responder by hand, because the unfair competition caused by subjective judgment. The game in order to accurately judge, justice, first responder, it cannot do without responder. As a kind of electronic products, in the market a lot, but the price is expensive, can according to the specific circumstances of changing some parameters, such as reaction time, the problem's increase is not good solution. According to the actual need to design a simple digital vies to answer first, so that not only save the cost, it can satisfy the actual need.

This paper introduces a responder same time for eight players of the game, the design of the digital vies to answer first by the priority encoder circuit, latch, decoding circuit, display circuit, timing circuit and control circuit, can achieve 8 contestant vies to answer first, meet the requirements of the school students knowledge contest.

Keywords: Digital circuit; Responder circuit ; The countdown circuit ; Alarm circuit ; The second pulse generating circuit