更新时间:01-20 上传会员:姐妹花
分类:理工论文 论文字数:10938 需要金币:500个
摘要:随着电子技术的发展,它在各个领域的应用也越来越广泛。人们对它的认识也逐步加深,人们也利用了电子技术以及相关的知识解决了一些实际问题。如:智能抢答器的设计与制作。抢答器是竞赛问题中一种常用的必备装置,从原理上讲,它是一种典型的数字电路,数字抢答器由主体电路与扩展电路组成。优先编码电路、锁存器、译码电路将参赛队的输入信号在显示器上输出;用控制电路和主持人开关启动报警电路,以上两部分组成主体电路。通过定时电路和译码电路将秒脉冲产生的信号在显示器上输出实现计时功能,构成扩展电路。经过布线、焊接、调试等工作后数字抢答器形成。在抢答电路中利用一个优先编码器译出最先抢到答题权的选手的编号并经LED显示器显示出来,同时还要封锁电路以防其他选手再抢答,当选手答题完成后,主持人将系统恢复至零。
关键词:抢答器; 定时; 报警; 锁存; 时序控制
Abstract: With the development of electronic technology, it,s application in various fields has become increasingly widespread. People have gradually deepened understanding. People have also made use of electronic technology and related know-how to solve some practical problems. Such as: Smart Answer Design and production. Answer is in the race must have a common device, from the principle, it is a typical digital circuit. Answer the number of circuits is controlled by the main circuit and expansion. Priority encoder circuit, latch, decoder circuit will be teams of the input signal in the display output; host by the beginning of the start button above the main circuit composed of two part. Time through the timing circuit functions, constitute the expansion of the circuit. After wiring, welding, testing, etc. Answer the number of devices after the forming. Answer circuit in a priority encoder to use given the right answer the first player to grab the code and displayed by the LED display, but also to prevent other players blocking circuits Answer again. When players complete answer, the host to bring the system back to zero.
Keywords: Answering;Timing; Warning;Latched;Time sequence controlling
本系统采用单片机作为整个控制核心。控制系统的四个模块为:显示模块、存储模块、语音模块、抢答开关模块。该系统通过开关电路四个按键输入抢答信号,利用一个数码管来完成显示功能,用按键来让选手进行抢答,在数码管上显示哪一组先答题的,从而实现整个抢答过程。
随着我国经济和文化事业的发展,在很多公开竞争场合要求有公正的竞争裁决,诸如证券、股票交易及各种智力竞赛等,因此出现了抢答器。抢答器一般是有很多电路组成的,线路复杂,可靠性不高,功能也比较简单,特别是当抢答路数很多时,实现起来就更为困难。因此我们设计了以单片机为核心的新型智能的抢答器,在保留原始抢答器的基本功能的同时又增加了数码管显示电路实现了其它功能。抢答器又称为第一信号鉴别器,其主要应用于各种知识竞赛、文艺活动等场合。