可以帮助需要做课程设计的朋友,次设计的功能是:主持人按开始按钮,如果10秒内没人抢答,喇叭项,并停止答题,该次抢答报废,如果4人中有人抢答,先抢答成功者的灯亮,其他人再按无效(除了主持人按复位),同时显示组别,抢答时间为10秒,超时作答无效.-Needs to be done to help a friend curriculum design, the function of design is: Moderator press the Start button, and within 10 seconds if no one Answer, horn items, and to stop the answer, the Answer scrapped, if someone in Answer 4, first Answer success of lights, other people and then null and void (except for host by reset), also showed groups, Answer time was 10 seconds of overtime to answer invalid.