对四队抢答进行“01、02、03、04”进行编号；上电开始时两位数码管显示“00”，并锁定参赛队的抢答按钮处于无效状态（不能抢答），处于待机状态。
（2）当主持人按抢答启动键时，两位数码管显示抢答倒计时间初始化时间值“15”秒，并进入抢答状态，当某一位按下抢答按键，其它队的抢答按键属于“抢答无效”工作状态，进入编号显示模块，并且蜂鸣器响起，等1s到时进入15s 回答时间的倒计时，倒计时结束进入报警模块（数码管闪动，蜂鸣器响）；若在抢答倒计时结束时还没人抢答，进入报警模块。
在报警模块中按下键回到待机模块，当主持人再次按抢答启动键时，抢答重新开始。(The four team answer "01, 02, 03, 04" number; power at the start of the two digital display "00", and lock the team answer button is in an invalid state (no answer), in the standby state.
(2) when the host press the start button to answer, two digital tube display answer countdown initialization time value "15" s, and enter the answer, when one press the answer button, buttons viesto other teams belong to "answer invalid", enter the number of display module, and the buzzer sounded, etc. 1s will enter the 15s answer time countdown, countdown to the end into the alarm module (digital tube flashing buzzer); if the end of the countdown in the first no one answer, enter the alarm module.
In the alarm module, press the key to return to standby module. When the host answers the starting button again, the answer starts again.)