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Going for Gold

The title refers to a popular TV game show where the contestants each have a big button. The gameshow host asks a question and the first contestant to press their button makes an illuminated indicator light up on their desk. The other contestants' buttons are automatically inhibited, so that everyone can see who was the first contestant to press their button, and so is allowed to answer the question. The project described here shows how to build a similar sort of refereeing device yourself, using simple resources and without needing a microcontroller, which is pretty rare these days!
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