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They are represented by symbols. A NOT gate looks like this: Logic Gates: The OR Gate. The next gate is the OR gate. If any input is 1, then the output is 1. In Minecraft, you can make an OR gate using two levers, Redstone and a Redstone lantern. When either lever is pulled, the lantern is on. So the lantern is on if this lever OR that lever is on. ................
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