毕业设计（论文）-八路抢答器设计说明书精选.doc

单位代码 01 学 号 分 类 号 TN7 密 级 毕业设计说明书 抢答器设计 院(系)名称 信息工程学院 专业名称 电子信息工程 学生姓名 指导教师 2015年05月11日 抢答器设计 摘 要 当今社会上的竞争愈来愈多，也越来越激烈，评优评先，智力竞赛之类等活动也愈见频繁，因此抢答器的应用与需求也就越来越普遍。而现在市场上的一些抢答器不仅成本高、线路多、体型大，而且安装和使用起来都很复杂。比如普通抢答器，是由通用集成电路制成，价格高、功能单一、性价比较差，往往很容易受人为因素的影响，因此在知识竞赛活动中无法精确保证比赛的公平、公正、直观。考虑到需设定限时回答和锁定按钮等功能，本系统采用STC89C52单片机为控制核心。本文根据系统功能划分成五个模块，分别为：单片机最小系统模块、电源模块、按键输入模块、显示模块、报警模块。软件设计则采用C语言进行编程。该智能抢答器,通过软件编程控制能显示抢到题目的选手编号、违规抢答的选手编号、抢答时间以及答题时间的倒计时，降低了成本、简化了硬件结构，并且抢答公平、误差较小。该智能电路简单、反应快、实用性强等优点，具有较高的推广价值，目前，国内外开始普遍使用。 关键词：单片机STC89C52，抢答器，C语言 The esign of the Responder Author: liu shi fei Tutor: Guo Bin Abstract Competition in todays society more and more, also more and more intense, with explicit PingXian, such as quiz activities also increasingly frequent, so the application of the buzzer and the demand is becoming more and more popular. Now on the market some of the buzzer is not only cost is high, the line more, large size, and is very complicated to install and use. Ordinary buzzer, for example, is made from common integrated circuit, high price, single function, cost performance is bad, often easily affected by man-made factors, in the knowledge competition, therefore, cannot accurately to ensure that the game fair and just, and intuitive. Considering the need to set the time to answer and lock button, and other functions, this system adopts the STC89C52 single-chip microcomputer as the control core. According to the system function is divided into five modules, respectively is: single chip microcomputer minimum system module, power module, key input module, display module, alarm module. The software design using C language for programming. The intelligent responder, through software programming control can show the players get the title number, violations of vies to answer first contestant number, vies to answer first time, and problem solving time countdown, reduces the cost, simplifies the hardware struct