毕业设计（论文）-基于1单片机的六路智能抢答器设计.docVIP

计算机应用技术专业(电子信息工程技术专业) PAGE 10PAGE \* MERGEFORMATIII基于51单片机的六路智能抢答器设计摘 要在抢答中，只靠人的视觉是很难判断出哪组先答题。利用单片机来设计抢答器，使以上问题得以解决，即使两组的抢答时间相差几微秒，也可分辨出 哪组优先答题。能够实现抢答器功能的方式有多种，可以采用模拟电路、数字电路或模拟与数字电路相结合的方式。实现抢答器功能的方式有多种，可以采用早期的模拟电路、数字电路或模数混合电路。本文利用AT89C51单片机及外围接口设计了一个六路抢答器。关键词： AT89C51 LED数码管 抢答器 计时 报警 Design of six way intelligent responder based on 51 single chip microcomputerAbstract：In the answer, only by peoples vision is difficult to determine which group first answer. Using single-chip microcomputer to design responder, so that the above problems can be solved, even if the two groups of responder time difference between a few microseconds, you can identify which group of priority questions. There are many ways to realize the function of responder, which can be simulated by means of analog circuits, digital circuits or analog and digital circuits. There are many ways to realize the function of answering device, and the early analog circuit, digital circuit or analog digital mixed circuit can be adopted. This paper uses AT89C51 microcontroller and peripheral interface to design a six way responder.Key words: AT89C51 LED digital tube responder, timing alarm目录 TOC \o 1-3 \h \z \u HYPERLINK \l _Toc498784284 第一章 系统总体方案的设计 PAGEREF _Toc498784284 \h 1 HYPERLINK \l _Toc498784285 1.1 硬件电路的设计 PAGEREF _Toc498784285 \h 1 HYPERLINK \l _Toc498784286 1.2 总体原理图 PAGEREF _Toc498784286 \h 2 HYPERLINK \l _Toc498784287 1.3 时钟频率电路的设计 PAGEREF _Toc498784287 \h 2 HYPERLINK \l _Toc498784288 1.4 复位电路的设计 PAGEREF _Toc498784288 \h 3 HYPERLINK \l _Toc498784289 1.5 显示电路的设计 PAGEREF _Toc498784289 \h 4 HYPERLINK \l _Toc498784290 1.5.1 显示模块在系统软件中的安排 PAGEREF _Toc498784290 \h 4 HYPERLINK \l _Toc498784291 1.6 键盘扫描电路的设计 PAGEREF _Toc498784291 \h 6 HYPERLINK \l _Toc498784293 1.7 发声 PAGEREF _Toc498784293 \h 7 HYPERLINK \l _Toc498784294 1.8 系统复位 PAGEREF _Toc498784294 \h 7 HYPERLINK \l _Toc498784295 第二章 软件设计 PAGEREF _Toc498784295 \h 9 HYPERLINK \l _Toc498784296 2.1 主程序系统结构图 PAGEREF _Toc498784296 \h 9 HYPER