Game Show Buzzer Circuit Diagram

Four player quizz buzzer Game schematic buzzer using anyone tell working why me circuit relays isn circuitlab created stack 2-1 quiz buzzer circuit diagram

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

Buzzer quiz circuit diagram engineersgarage electronic circuits Circuit buzzer diagram player quiz engineersgarage four

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

Four Player Quizz Buzzer - Circuit Diagram & Implementation

2-1 Quiz Buzzer Circuit Diagram