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They were the first created and they were large and expensive. They used vacuum tubes (Made of glass bulbs and wire). They were called the ENIAC
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The Second Generation Computers are better than the first ones, they use transistors, which are faster and cheaper than the ENIAC
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The Third Generation have an integrated circuit in them, which are much better than the other generations
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They use microprocessors. They are smaller, cheaper and it can be transported. We use this computers nowadays.
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They are still being researched. They use Artificial Inteligence (AI)
