数字抢答器.doc

课题数字抢答器
学生姓名学号
所在院(系) 物电学院
专业班级电信1103班
指导教师
完成地点陕西理工学院实验室
2015年 05月21日
数字抢答器
(陕西理工学院物电学院电子信息科学与技术专业1103班级,陕西汉中)
指导老师:
[摘要]数字抢答器作为一种电子产品已广泛应用于各种智力和知识竞赛场合。但目前所使用的抢答器有的电路较复杂,成本较贵,不便于制作,而且可靠性不高;有的则用一些专用的集成芯片,而专用集成芯片本身价格较贵,购买也比较难。为符合多选手抢答活动的需要,本文设计了一个智能数字抢答器,这种抢答器具有电路简单,元件普通且易于购买等优点,很好地解决了制作者制作困难和难于购买的问题。本次设计基于AT89C52单片机技术的八路数字抢答器,结合C语言编程软件Keil4和电路仿真软件proteus对软件系统和硬件系统进行了仿真,并且制作了电路板。主体电路由抢答电路,优先编码电路和锁存电路以及控制电路组成,扩展电路由报警电路和显示电路组成。本设计主要采用单片机控制,采用手动抢答的方式,有人抢答后,系统会自动封锁其他人的抢答按钮,使其不能在抢答,从而实现抢答功能。
[关键词]单片机抢答器 LED显示
Digital Responder
Cao LiuHuiZi
(Grade11, Class03, Major Electronic information science and technology,School of Physics and munication Engineering,Shaanxi University of Technology, Hanzhong , Shaanxi)
Instructor: Yang Chuang Hua
Abstract:Digital responders as a kind of electronic products have been widely used in various intelligence and petitions. But the circuits in the current responsers is plex that it is not easy to make and its reliability is low, In addition, the responders can be made using some special integrated chips. But the purchase of the special integrated chip is very difficult and the cost increased. In order to meet the needs of the many players vies to answer first activities, an intelligent digital responder is designed, which has simple circuit and is easy to be relieved. The design is eight way digital vies to answer first and based on AT89C52 monolithic integrated circuit technology. The main circuit part of this system contains the responder circuit, priority coding circuit, latch circuit and control circuit. The extended circuit part includes the alarm circuit and display circuit. This design is based on the MCU control, with the method of manual vies to answer first. The system will automatically block other people's vies to answer first button after someone pushes the button. Thus, it realizes the function of vies to answer first.
Key words:single-chip puter, vies to answer first, LED display
目录
引言 1