单片机八路抢答器课程设计完成版.docVIP

单片机课程设计 项目名称 基于51单片机八路抢答器设计 专业班级 通信121班 学生姓名 康健 指导教师 刘文礼 2014年12 月10日 摘 要 本课程设计提出八路抢答器，随着科学技术的不断发展，促使着人民学习科学、学习技术、学习知识的手段多种多样。抢答器已经广泛应用于各种智力和知识竞赛场合。本设计是以八路抢答为基本理念，主要采用单片机为核心器件，利用单片机的定时器/计数器定时和记数的原理，将软、硬有机的结合起来，使得系统能够正确的进行计时完成的设计，同时采用了数字显示器直接指示，自动锁存显示结果，并自动复位的设计思想，用开关做键盘输出，用扬声器发声提示，设计具有系统结构简单、反应快、功能强大、可靠性好、操作简单、实用性强的特点。达到了准确、公平、公正的水平。具有直观的判断出第一抢答者的意义。 关键字：抢答器； 单片机； 复位；键盘；扬声器； Abstract The proposed eight way responder of the curriculum design, with the development of science and technology, a variety of means to urge people to learn science, learning technology, learning knowledge diversity. The contest has been widely applied in all kinds of intelligence and knowledge competitions occasions. The design is based on the eight road as the basic concept, mainly uses the microcontroller as the core device, the use of single-chip timer / counter timing and counting principle, the soft and hard organic combination, so that the system can complete the design time are correct, at the same time adopts digital display direct instructions, automatic latch display results. And design idea of automatic reset, switching to do with the keyboard output using speaker voice prompts, the design has the characteristics of simple structure, fast response, the system of powerful functions, good reliability, simple operation and strong practicability. To achieve an accurate and fair level. With intuitive judgment of the first responder significance. Keywords: responder; MCU; justice; 目 录 第 TOC \o 1-3 \h \z \u HYPERLINK \l _Toc374213931 1章 绪论 PAGEREF _Toc374213931 \h 1 HYPERLINK \l _Toc374213932 1.1 数字抢答器的概述 PAGEREF _Toc374213932 \h 1 HYPERLINK \l _Toc374213933 1.2 设计要求及目的 PAGEREF _Toc374213933 \h 1 第 HYPERLINK \l _Toc374213934 2章 硬件电路设计 PAGEREF _Toc374213934 \h 2 HYPERLINK \l _Toc374213935 2.1 总体原理图 2 HYPERLINK \l _Toc374213936 2.2 时钟频率电路的设计 PAGEREF _