基于altera公司的cycloneIII的课程设计，主要功能是选手抢答，有倒计时功能，一名选手抢答后其他人无法抢答，倒计时同时停止，若没人抢答，则倒计时归位。-altera company cycloneIII curriculum design based on main function is to answer the players, there is a countdown, after a player who was unable to answer other answer,