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A vacuum tube consists of a glass bulb and wire. The wire is used to carry data in the form of eletronic signals.
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the second-generation computers used transistors instead of vacuum tubes.
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An integrated circuit (IC) is a small as a transistor but it can work as fast as thousands of them.
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The fouth-generation computers use microprocessors. A microprocessor consists of a small silicon chip on which thousands of circuits are placed.
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scientits are now trying to develop fifth-generation computers in a way that they can think on their own. this is called Artificial intelligence(AI). robots work on this technology.
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