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声光显示智力竞赛抢答器设计毕业设计报告(论文)报告(论文)题目：声光显示智力竞赛抢答器设计作者所在系部：机械工程系作者所在专业：测控技术与仪器作者所在班级：B08122 作者姓名：安志超作者学号：xx年6月北华航天工业学院教务处制北华航天工业学院毕业论文摘要随着电子技术的飞速发展，在电子领域尤其是自动化智能控制领域，传统的分立元件或数字逻辑电路构成的控制系统，正以前所未有的速度被单片机智能化控制所取代。
单片机具有体积小、功能强、成本低、应用面广等优点，可以说智能化控制与自动控制的核心就是单片机。
基于单片机的控制系统已广泛应用于各行业。
此次设计提出了以AT89C51单片机为核心控制元件，设计一个简易的八路抢答器，AT89C51单片机为主控核心，与晶振、数码管、蜂鸣器等构成八路抢答器，利用了单片机的延时电路、按键复位电路、时钟电路、定时器/计数器等设计的八路抢答器不仅具有实时显示抢答选手的号码和抢答时间的功能，同时还利用汇编语言编程，使其实现复位、定时和报警的功能。
本次设计的系统实用性强、判断精确、操作简单、扩展功能强。
关键词：八路报警 AT89C51 抢答器定时I北华航天工业学院毕业论文AbstractWith the rapid development of electronic technology, intelligent control in the electronics field especially automation, traditional discrete components or control system of digital logic circuits, are at an unprecedented rate sheets replaced by chip computer intelligent control. MCU has small size, functions and advantages of low cost, wide application, it can be said of intelligent control and automation of core is a single chip. Based on single chip microcomputer control system has been widely used invarious industries.This design made has to AT89C51 single tablets machine for core control components , design a simple of eight - way preemptive answer device , AT89C51 single tablets machine mainly controlled core , and Crystal vibration , and digital tube , and bee Ming device , constitute eight - way preemptive answer device , using has single tablets machine of delay circuit , and press reset circuit , and clock circuit , and timer counter , design of eight - way preemptive answer device not only has real-time display preemptive answer players of number and preemptive answer time of function , while also using assembly language programming , makes its implementation reset , and scheduled and alarm of function . The design system of practical, accurate, simple operation and extended functions of judgment. Key words : eight –way alarm AT89C51 preemptive answer timeII北华航天工业学院毕业论文目录摘要................................................. ................................................... ................................................... . (I)Abstract........................................... ................................................... ................................................... . (II)第1章绪论 ................................................ ................................................... . (1)选题背景、意义 ................................................ ................................................... . (1)八路抢答器的功能简介 ................................................ ................................................... ................... 1 第2章系统硬件设计 ................................................ ........................................................................................ 2 芯片的选择 ................................................ ................................................... ....................................... 2 控制器的选择 ................................................ ................................................... ....................... 2显示模块的选择 ................................................ ................................................... . (2)键盘的选择 ................................................ ................................................... ........................... 3 芯片最终选择方案 ................................................ ................................................... ............... 3 AT89C51单片机简单概述 ................................................ ................................................... . (4)51系列单片机的功能特................................................... .. 4 硬件的构成及功能 ................................................ ................................................... (6)抢答器的硬件图 ................................................ ................................................... ................... 7 时钟频率控制电路 ................................................ ................................................... ............... 7 复位电路的设计 ................................................ ................................................... ................... 8 报警电路的设计 ................................................ ................................................... ................... 9 显示电路的设计 ................................................ ................................................... ................... 9 键盘扫描电路的设................................................... (10)第3章系统软件设计................................................. ................................................... .. (12)系统主程序设计................................................. ................................................... ..............................12 键盘扫描程序设计................................................. ................................................... ..........................13 显示程序设计................................................. ................................................... ..................................14 第4章系统调试与软件仿真................................................. ................................................... (15)Keil uVision2软件调................................................... ................15 Proteus仿真................................................. ................................................... ......................................15 第5章总结................................................. ................................................... (19)致谢................................................. ................................................... ................................................... .............20 参考文献................................................. ................................................... ................................................... ...22 附录................................................. ................................................... ................................................... . (23)附录一主程序清单................................................. ................................................... ................................23 附录二单片机八路智能抢答器原理图................................................. ...................................................33北华航天工业学院毕业论文第1章绪论选题背景、意义当今时代是一个新技术层出不穷的时代，在电子领域尤其是自动化智能控制领域，传统的分立元件或数字逻辑电路构成的控制系统，正以前所未有的速度被单片机智能化控制所取代。
