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，结束指示灯亮如果选手未能在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-After the system is powered on, the display prompt P., press the the K1 enter Responder interface, if the host did not start by K1 key players press is considered to violation Responder, digital tube display the offending player number, buzzer alarm offending light When the host press K1, the buzzer soon began Responder. The player first press displays digital tube and start the countdown If players the questions answered within 20 seconds, and press K2 buzzer alarm, the end of the indicator light if the players failed within 20 seconds Press K2, buzzer alarm timeout light K7 reset button pressed again enter the answer in the interface