Simple Classroom Quiz Buzzers

Intro: Simple Classroom Quiz Buzzers

It's easily to make the simple classroom quiz buzzers .I use a switch,two Electronic stopwatches(including batteries),four meters wire and some electric tools.It's a parallel circuit.
But it has low accuracy.

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    8 Discussions

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    rimar2000

    6 years ago on Introduction

    Forgive my ignorance. I searched Google with responder but I could not found what thing it is. Can you explain it to me?

    7 replies
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    serainerimar2000

    Reply 6 years ago on Introduction

    I think it's basically one of those things where two people are asked a question. When one of the two thinks they know it, they press their respective button and get to answer their question. This tells who the first person to press their button was.

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    MakingWorldseraine

    Reply 6 years ago on Introduction

    you are right.so,can you tell me what it is in English?Google tells me that it is a responder.all in all,thanks for your help.

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    seraineMakingWorld

    Reply 6 years ago on Introduction

    They are often called classroom quiz buzzers. Here is a link with a lot of different ones. http://www.trainerswarehouse.com/products.asp?dept=122

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    MakingWorldrimar2000

    Reply 6 years ago on Introduction

    I feel sorry that my english is not good to explain what it is.it calls 抢答器 in Chinese.it also calls competitive answer machines.It's used to determine who can answer in advance. Thanks for your reminding.