智力竞赛抢答器

南通职业大学电子信息工程学院毕业设计说明书（论文）智力竞赛抢答器Abstract The eight-way digital display snatcher introduced in thispaper has the advantages of simple circuit,low cost,convenient operation,sensitivity and reliability,etc.It has been used with good effect and hashigh promotion value.The wireless remote control snatcher,whichconsists of 8 transmitters and 1 receiver,can be used in the quizcompetition of 8 groups or less.Before the competition,the participatinggroups are numbered from 0 to 7,and each group is issued acorresponding transmitter.The receiver is placed in the center or in frontof each group.After the moderator presses the start button,the quizbegins.Thereafter,which group is the first to press the key on thetransmitter,the receiver will immediately display the group's groupnumber and lock,while emitting three times a crisp ding-dong "sound.Later,press any way to grab the key is not reflected.Only after themoderator presses the start button again,the next snatch can be carriedout.The circuit consists of four parts:DC regulated power supply,snatcher,time-out alarm and electronic scoring.Keywords:quiz competition;8-bit;snatcher