毕业设计（论文）-基于51单片机的8路抢答器的设计.doc

论文题目:
基于51单片机的8路抢答器的设计


年

级:
08级通信2班
院

系:
电子信息工程学院
学生姓名:
指导教师:

年
2011
5月

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
Abstract
With the rapid development of electronic technology, intelligent control in the electronics field especially automation, traditional ponents or control system of digital logic circuits, are at an unprecedented rate sheets replaced by puter 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 puter control system has been widely used in various industries.
This design made has to AT89C51 single tablets machine for core ponents , 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 time
目录
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