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2-1 Quiz Buzzer
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2-1 Quiz Buzzer

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Quiz Buzzer Circuit for Eight players using IC 74LS373 | EE Project

8 Player Quiz Buzzer

Four Player Quizz Buzzer - Circuit Diagram & Implementation

4 Player Quiz Buzzer

Make a four player Quiz buzzer circuit without microcontroller - YouTube

School/College Quiz Buzzer Circuit Diagram using 555 Timer IC