基于单片机的八路智能抢答器详解.doc

基于单片机的八路智能抢答器 摘 要 抢答器现如今主要应用比赛和竞赛中，在竞赛、文体娱乐活动（抢答活动）中，能公正、准确、直观地判断出抢答对象的一种机器。单片机智能抢答器是根据单片计算机开发和设计的一个目前具有实用性的一种产品。随着社会和科学技术，越来越多的比赛中迅速普及的飞速发展，响应也发挥了越来越重要的作用。通过数字显示的八大核心AT89S51单片机的设备直接指令的设计Microcontroller-based Intelligent Responder eight Responder is now the major tournaments and competitions should, in competitions, sports and recreational activities (Responder activities), the fair, accurate and visually determine the answer like a machine. Responder is based on single-chip computer development and design of a practical present a product. With the current rapid development of society and the rapid popularization of science and technology, more and more competitions, Responder also played an increasingly important role. The design of the eight core AT89S51 MCU A device for direct instruction via digital display, display dynamic latch knot, and it automatically resets design ideas that can answer depending on the input signal, after a single-chip control processing and produce different and the corresponding output and input signal number, and finally, the appropriate time, even between the two groups in different answers to a few microseconds, can also be set to distinguish the key priorities through a digital display, full use of the microcontroller Department structure is simple, reliable, and powerful features, such as too. Keyword：Microcontroller，Control Responder，Valid / invalid answer 目录 1 绪论 1 1.1原理 1 1.2基本功能 1 1.3单片机的内部结构 3 2 实现的功能和电路 4 2.1 八路抢答器的总框图 4 2.2 总的电路图 4 3 子程序电路的设计 6 3.1电源电路的设计 6 3.2时钟电路设计 6 3.3振荡方式的选择 7 3.4复位电路设计 8 3.5 人工复位 8 3.6判断电路 9 3.7扫描电路的实现 10 3.8 显示模块在系统硬件中的安排 10 3.9按钮输入的硬件处理 11 3.10 报警电路 11 3.11 系统复位 12 结论 13 参考文献 14 1 绪论 1.1原理 智力竞赛抢答器设计有着三种工作方式:①主持人按下启动键后，秒时中开始计时，在20s的规定时间之内当某位选手在按下抢答键时，与其对应的席位指示灯变亮，视为正常的抢答，秒时钟计时自动停止;②主持人按下启动键后，秒时钟开始计时，在20s之内选手还没有一个按下抢答器，则表示放弃这轮抢答，秒时钟自动计时停止;③主持人在没有按下启动键时，其中有选手就提前按下抢答键，与其对应席位的指示闪烁，表示选手抢答犯规。此外，之后的一个选手迅速