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As noted in Robert Harvey answer, transistors are used to make logic gates. That does not cover how electrons move inside the transistors. It is worth noting that logic gates, as any abstraction, can be implemented multiple ways. It is perfectly possible to make logic gates out of relays, or LEGO, or Dominoes or Minecraft Redstone, etc... and in theory you ...


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The symbol below represents a transistor, the fundamental element of any modern computing device. It acts as a switch; current (the movement of electrons) flows from the bottom wire to the top wire when a voltage is applied to the left wire. Logic gates are created by combining transistors in various combinations. For example, the following circuit ...


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There are a lot of possibilities — number of cores, cache hierarchy, implementation particulars that vary across even very similar era CPUs targeted toward different prices & power consumptions. For one, let's say the two competing threads are time slicing on the same core.  When that's the case, then since they are running on the same core ...


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