本设计为多路智能抢答器，所以这种抢答器要求有不同组别的抢答输入信号，并能识别最先抢答的信号，直观地通过数显和蜂鸣等方式显示出组别；对回答问题所用的时间进行计时、显示、超时报警、预置答题时间，同时该系统还应有复位、倒计时启动功能。(This design is multi-channel intelligent responder, so this responder requires different groups of rush answer input signal, and can identify the first rush answer signal, intuitively through the digital display and buzzer, etc. to show the group; answer Question time used to time, display, timeout alarm, preset answer time, at the same time the system should be reset, countdown start function.)