1、 毕毕 业业 设设 计计 论论 文文 题目：声光显示智力竞赛声光显示智力竞赛 16 路抢答器路抢答器 系 别： 电气与电子工程系 专 业： 姓 名： 学 号： 指导教师: 2011 年年 5 月月 24 日日 I 摘摘 要要 抢答器是一种应用非常广泛的设备,无论是在学校、工厂、军队还是益智性电 视节目都会举办各种各样的智力竞赛, 都会用到智力抢答器。目前市场上已有各 种各样的智力竞赛抢答器, 但绝大多数是早期设计的, 以模拟电路、数字电路或 者模拟电路与数字电路相结合的产品。这部分抢答器已相当成熟, 但功能越多的 电路相对来说就越复杂, 且成本偏高, 故障高, 显示方式简单( 有的甚至没有显
2、示电路) , 无法判断提前抢按按钮的行为, 不便于电路升级换代。近年来随着单 片机的应用不断深入,基于单片机控制的抢答器的设计越来越被人们广泛的接受， C51 语言的成熟和单片机本身的汇编语言的融合即混合编程使得它比一般的汇编 语言有更好的可读性。 本次设计中将采用AT89S51单片机为主控核心，在设有16个抢答键的抢答电路 模块、控制电路模块和LED显示电路模块的共同作用下,可供16人同时抢答。主持 人按下开始按钮后，哪一个先抢答，则在数码管上显示选手编号，同时给出声音 提示并封锁输入，其他选手再抢答则无效。具有定时抢答功能,抢答时间可由主持 人设定。在设定时间内抢答有效,定时器停止工作。定
3、时时间已到,无人抢答,本次 抢答无效。 关键词关键词: :抢答器智力；单片机； 抢答器；数码显示 河南城建学院毕业设计（论文） 摘要 II ABSTRACT Contest device is a very extensive equipment, whether in schools, factories, the army is TV programs will conduct all kinds of intelligence contest, can use vies to implement. Already on the market at present various quiz
4、zes responder, but great majority is early design to analog circuits, digital circuit or analog circuits and digital circuit combination of products. This part of the contest is quite mature, but already relatively more circuit function of the complex, and higher cost, fault high, show way simple (s
5、ome didnt even show circuit), press the button to judge the behavior of early rob, do not facilitate circuit upgraded. In recent years, with the application of SCM unceasingly thoroughly, based on single chip microcomputer control the design more and more be responder widespread acceptance of mature
6、 and C51 language, the microcontroller itself assembly language fusion hybrid programming makes it is than the general assembly languages have better readability. This design will be used for controlling AT89S51 core, with 16 contest key in the contest circuit module, control circuit module and LED display circuit module, which under the common function of 16 people also contest. Host press the start button, which first contest, is in the digital tube is prese
