【2018年必威体育精装版整理】5路抢答器毕业论文.doc

抢答器毕业设计论文 电子101班 郎璐婷 摘 要 随着科学技术的发展和普及，各种各样的竞赛越来越多，其中抢答器的作用也就显而易见。目前很多抢答器基本上采用小规模数字集成电路设计，使用起来不够理想，因此设计一个易于使用和区分度高的抢答器成了非常迫切的任务。现在单片机已进入各个领域，以其功耗小、智能化而著称，所以若用单片机来设计抢答器，更使以上的问题得以解决，针对以上的情况，本文主要以AT89S52 单片机为核心器件,设计实现了五路抢答器系统。利用C语言编程及单片机芯片与外围硬件电路来实现五路抢答、锁存、显示、定时、报警、清零和优先抢答等功能。工作时，用按键通过开关电路输入各路的抢答信号，经单片机的处理，输出控制信号，控制数码管和其它硬件工作。在数码管上显示优先答题组号以及答题之后的分数，从而实现整个抢答过程。 关键词：单片机；AT89S52；数码管；抢答器 ABSTRACT With the development and popularization of science and technology, more and more variety into the contest, which will clear the role of Responder. Responder basically present, many small-scale digital integrated circuit design, is not ideal to use, so the design is easier to use and distinguish between a high of Responder has become a very urgent task.Now have access to all areas of SCM, with its low power consumption, known for intelligent, so if Responder microcontroller to design, more so than the problems are resolved, for the above, this paper mainly AT89S52 microcontroller as the core component design Achieved eight Responder system.朗读 显示对应的拉丁字符的拼音 ? 字典 Use of C language programming and microcontroller chips and hardware to achieve the eight peripheral answer in, latch, display, time, alarm, clear answer in other functions and priorities.Work, with the key switch circuit by the answer in the input signals from various quarters, the MCUs processing, the output control signal to control the digital pipes and other hardware work. Priority in the digital display group number and the answer after answer the score, in order to achieve the answer in the process. [Key words]: microcontroller AT89S52 Octal LED Responder目 录 摘 要 I ABSTRACT II 1 引言 1 2 系统功能 1 3 工作原理 2 4 主要元器件 3 4.1 主控芯片AT89S52 3 4.2 报警器 6 4.3 数码管 7 4.4晶体振荡器 10 5 硬件系统设计 12 5.1 电路总体构成 12 5.2 电源输入电路 12 5.3 复位电路 13 5.4 晶振电路 14 5.5 显示电路 14 6 软件程序设计 15 6.1程序流程图 15 7 调试与实现 16 7.1 硬件调试 16 7.2 软件调试 16 7.3 Proteus