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1、贵州航天职业技术学院贵州航天职业技术学院毕业设计论文题目智能抢答器姓名熊钻专业电子工程系学号A093GZ042020173指导老师董泽芳otherstaffoftheCentre.Duringthewar,ZhuwastransferredbacktoJiangxi,andDirectorofthenewOfficeinJingdezhen,JiangxiCommitteeSecretary.Startingin1939servedasrecord
2、eroftheWestNorthOrganization,SecretaryoftheSpecialCommitteeAfterthevictoryofthelongMarch,hehasbeentheNorthwestOfficeoftheFederationofStateenterprisesMinister,ShenmufuguSARmissions,DirectorofNingxiaCountypartyCommitteeSecretaryandrecorderoftheCountyparty
3、CommitteeSecretary,Ministersand2贵州航天职业技术学院otherstaffoftheCentre.Duringthewar,ZhuwastransferredbacktoJiangxi,andDirectorofthenewOfficeinJingdezhen,JiangxiCommitteeSecretary.Startingin1939servedasrecorderoftheWestNorthOrganization,SecretaryoftheSpecialCom
4、mitteeAfterthevictoryofthelongMarch,hehasbeentheNorthwestOfficeoftheFederationofStateenterprisesMinister,ShenmufuguSARmissions,DirectorofNingxiaCountypartyCommitteeSecretaryandrecorderoftheCountypartyCommitteeSecretary,Ministersand2摘要摘要随着科学技术的发展和普及,各种各样
5、的竞赛越来越多,其中抢答器的作用也越来越重要。本文设计出以AT89S51单片机为核心的八路抢答器,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,它能根据不同的抢答输入信号,经过单片机的控制处理并产生不同的与输入信号相对应的输出信号,最后通过LED数码管显示相应的路数,即使两组的抢答时间相差几微秒,也可分辨出是哪组优先按下的按键,充分利用了单片机系统结构简单、功能强大、可靠性好、实用性强的特点。本设计是以抢答为出发点。考虑到依需设定限时回答的功能,利用89S51单片机及外围接口实现的
6、抢答系统,利用单片机的定时器/计数器定时和记数的原理,将软、硬件有机地结合起来,使得系统能够正确地进行计时,同时使数码管能够正确地显示时间。用开关做键盘输出,扬声器发生提示。同时系统能够实现:在抢答中,只有开始后抢答才有效,如果在开始抢答前抢答为无效;满时后系统计时自动复位及主控强制复位;按键锁定,在有效状态下,按键无效非法【关键词】抢答器单片机LED数码显示管定时器/计数器扬声器。otherstaffoftheCentre.Duringthewar,ZhuwastransferredbacktoJi
7、angxi,andDirectorofthenewOfficeinJingdezhen,JiangxiCommitteeSecretary.Startingin1939servedasrecorderoftheWestNorthOrganization,SecretaryoftheSpecialCommitteeAfterthevictoryofthelongMarch,hehasbeentheNorthwestOfficeoftheFederationofStateenterprisesMinist
8、er,ShenmufuguSARmissions,DirectorofNingxiaCountypartyCommitteeSecretaryandrecorderoftheCountypartyCommitteeSecretary,Ministersand2摘要otherstaffoftheCentre.Duringthewar,ZhuwastransferredbacktoJiangxi,andDirectorofthenewOfficeinJing