51黑论坛_八路抢答器.rar

上传者: 46500511 | 上传时间: 2021-03-14 16:06:32 | 文件大小: 906KB | 文件类型: RAR
介绍了数码显示八路抢答器电路的组成、设计及功能,该抢答器除具有基本的抢答功能外,还具有计时和报警的功能。主持人通过时间预设开关预设供抢答的时间,系统将完成自动倒计时。若在规定的时间有人抢答,则计时将自动停止,若在规定的时间无人抢答,则系统中的蜂鸣器将发响,提示主持人本轮抢答无效,实现报警功能,若超过抢答时间则抢答无效。

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