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-It is generally known as electromechanical computers or using vacuum tubes.
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-Also known as transistor computers. The second generation of computers consist two types of devices, transistors and magnetic core.
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-Period of third generation was from 1956-1971. It also used integrated circuits (ICs) in place of transistors.
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- Between 1971-1980. These computers used the VLSI TECHNOLOGY or The very large scale integrated(VLSI) CIRCUITS TECHNOLOGY.
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- It uses A.I (ARTIFICIAL INTELLIGENCE) technology that includes development of expert systems, Game playing, robotics, natural language understanding, and neural networks.