系统上电后，显示提示符P.,按K1进入抢答界面，如果主持人没按K1开始键，选手按动 则视为违规抢答，数码管显示违规选手号，蜂鸣器报警，违规指示灯亮，当主持人按下K1,蜂鸣器鸣一声，开始抢答。最先按下的选手，会显示在数码管上，并开始倒计时，　　如果选手在20秒内回答完问题，并按下K2,蜂鸣器开始报警，结束指示灯 如果选手未能在20秒内按下K2,蜂鸣器开始报警，超时指示灯亮 K7为复位键，按下后，再次进入抢答界面-System power-up, the display prompt P., K1 enter the answer in the interface, if the host is not K1 key players pressed as a violation Responder, digital display pertinent contestant No. buzzer alarm, illegal light When the host presses K1, the buzzer sound, began to answer. First player to press, will be displayed on the digital control, and start the countdown, if the players answer the question within 20 seconds, and press K2, began to alarm buzzer, the end of the indicator if the player fails within 20 seconds press K2, buzzer alarm timeout indicator light K7 reset button is pressed, re-enter the Responder interface