这是一个抢答器的设计，包括Proteus的仿真图，实现30秒抢答和锁存、犯规等功能-This is an answering device design, including the Proteus simulation map, achieving 30-second answer in and latches, fouls and other functions

基于单片机的抢答器。抢答时间为7s，7s倒计时结束到，全部选手都不能按，只能等待主持人按下重新按钮。有7个选手的抢答按钮，一个主持人的按钮。7个选手任意一个抢答之后，数码管会显示选手号码，其他选手不能抢答。主持人按下重新按钮之后，选手又可以进入抢答环节。-Based on Single Chip Responder. Answer time is 7s, 7s countdown to the end, all the players can not press, can only wait f

竞赛抢答器 用与八个人在玩抢答游戏时所用到的强答的机器(Competition answering machine A strong answer machine used with eight people to play a quick answer game)