抢答器，设计了两个人的抢答器，分别设有按钮P1,P2（P1对应按键S3，P2对应按键S4）当按钮1被按下时显示灯1亮即D3亮，同样时按钮2时显示灯D10亮；32秒后 无人抢答的话，自动报警；当有人抢答时除了显示灯亮之外，蜂鸣器会响。-Responder, two people Responder, respectively, with the button P1, P2 (P1 corresponding button S3, P2 corresponding button S4) shows a bright light that lit D3 when the button is pressed, the same button to 2:00 bright lights D10　no answer after 32 seconds, automatic alarm　when people answer in addition to the display lights, the buzzer will sound.