摘要:智力竞赛抢答器是一个供参赛者获得答题权的一种设备。它能够清楚而精准的分辨出哪位选手最先按下抢答器,进而获得答题权。本设计围绕智力竞赛,设计出成本低廉、实用的抢答器,为社区、企业、学校、社会团体等组织提供廉价、方便的抢答器,对提高国人整体素质具有现实意义。本论文拟设计一个可以容纳几名选手的抢答器。设置一个系统清零和几个抢答开关S,系统清零开关由主持人控制,抢答开关由选手操控。抢答器具有锁存与显示功能,即选手按动按钮,锁存相应的编号,并将优先抢答选手的编号显示到数码管上,直到主持人将系统清零为止,然后依次抢答。40530 毕业论文关键词:抢答器;数字电路;锁存器;逻辑电路
Design of intellectual competition responder logic circuit
Abstract:Intellectual competition responder is a kind of equipment for a competitor to get the answer right. It can be clearly and accurately identify who the first press vies to answer first, and then get the answer right. This design around the quiz responder, designed low cost, practical, provided for the community, enterprises, schools, social groups of cheap, convenient responder, to improve the overall quality of Chinese people has practical significance. This thesis intends to design a can accommodate a few players responder. To set up a system reset and several Qiangda switch S, system reset switch is controlled by the moderator, the answer from the player control switch. The responder has a latch and display function, namely the players press the button, the corresponding number of latches, and will give priority to answer in the number of players to the digital tube display, until the host system clear, then answer.
Keywords: responder; digital circuit;latch;logical circuit
目 录
第一章 引言1
第二章 设计功能要求2
2.1功能要求2
2.2设计步骤与要求2
第三章 抢答器的框架设计3
第四章 电路设计4
4.1 抢答电路设计4
4.2 定时电路设计5
4.3 报警电路设计6
4.4 时序控制电路设计7
第五章 电路的焊接与调试9
5.1 电路的焊接9
5.2 调试9
第吹冰章 元器件介绍10
6.1 74LS148功能介绍10
6.3 74LS279 功能介绍10
6.3 74LS192功能介绍10
第七章 日常文护11
第八章 总结12
参考文献13