Game Show Buzzer Circuit Diagram

Game schematic buzzer using anyone tell working why me circuit relays isn circuitlab created stack Buzzer quiz circuit diagram engineersgarage electronic circuits 2-1 quiz buzzer circuit diagram

2-1 Quiz Buzzer Circuit Diagram

Four player quizz buzzer Circuit buzzer diagram player quiz engineersgarage four

2-1 Quiz Buzzer Circuit Diagram

power - Can anyone tell me why my game buzzer isn't working

Four Player Quizz Buzzer - Circuit Diagram & Implementation