基于单片机的6路抢答器设计
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密 惠 保
摘 要
本论文的论题是6路抢答器的设计。随着人们生活的日益丰富，抢答器走入了人们的生活，已渐渐被人们所熟知。在一些团体的知识竞赛中有着广泛的应用，它能迅速、客观地分辨出哪位选手最先按下的抢答键，大大增强了比赛的公平性，更全面的体现了选手们的实力，增加了选手和观众的兴趣，给人们带来了很大的方便。而随着科学技术的不断发展，以单片机作为主控制器的抢答器，占据了主要的地位。在功能方面，相比较而言，也增加了很多；在电路设计方面，做到了电路简单方便。
此6路数字抢答器的设计思想是软硬件结合，以单片机为基础，汇编程序为核心。抢答器有抢答功能,显示功能,抢答限时,答题限时,时间设定,蜂鸣报警。
关键词：抢答器；显示电路；报警电路； [资料来源：THINK58.com]
[资料来源：www.THINK58.com]
Abstract
Present paper's thesis is 6 groups vie to answer the first design. Lives day by day richly along with the people, vied to answer first has walked into people's life, had been known very well gradually by the people. Has the widespread application in some association's knowledge competition, can it rapid, which contestant distinguish to press down first objectively vies to answer the first key, strengthened competition's fairness greatly, more comprehensive has manifested contestants' strength, increased the contestant and audience's interest, has brought very big convenient to the people. But along with science's and technology's unceasing development, takes the master-control unit by the monolithic integrated circuit to vie to answer first, occupied the main status. In function aspect, comparatively speaking, also increased many; In the circuit design aspect, has achieved the electric circuit simply convenient. This 6 groups digit vie to answer the first design concept is the software and hardware union, take the monolithic integrated circuit as the foundation, the assembly program is the core. Vies to answer first has vies to answer the first function, demonstrates the function, vies to answer the first time limit, the answer time limit, the time setting, the buzzing warning. Key word: Vies to answer first; Display circuit; Alarm circuit; [资料来源：www.THINK58.com]
目录
摘 要 1
Abstract 2
1 前言 4
2 抢答器简介 5
2.1 抢答器的历史 5
2.2 抢答器的发展趋势 5
3 总体设计 6
3.1 实现功能及框图 6
3.1.1实现的功能 6
3.1.2系统框图 6
3.2最终方案 7
4 电路设计 7
4.1方案及论证 7
4.1.1硬件部分组成模块 7
4.1.2模块设计 8
4.2抢答器原理 13
4.2.1抢答器原理图 13
4.2.2原理论述 13
4.3 PCB版图设计 14
5 软件设计 15
5、1 程序设计 15
5.1.1程序流程图 15
5.1.2程序代码 15
6结论 26
参考文献 27
致谢 28
附录 29