该抢答器是用数字显示抢答倒计时时间，倒计时可由99倒计到0，倒计开始和结束时蜂鸣器都会发出抢答成功和回答时间到的提示音。选手抢答时，在显示数组的数码管显示抢答成功的选手编号直至计时结束该数码管才不亮。-Responder is the answer in the countdown time digital display, countdown count down by 99 to 0, the beginning and end of the countdown will be issued