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father of computing at the time of world war 2 created a enigma machine
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The first generation computers worked by means of electronic circuits and valves. They had restricted use, in addition to being immense and consuming a lot of energy.
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Even with very large dimensions, the second generation computers worked by means of transistors, which replaced the valves that were bigger and slower. Commercial use has already begun to spread during this period.
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Third generation computers operated by integrated circuits. These replaced the transistors and already had a smaller size and greater processing capacity.
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With the development of information technology, computers decrease in size, increase the speed and capacity of data processing. Microprocessors with less and less energy are included.
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today's computers are extremely powerful and compact compared to the old days
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very popular with young people, PC gamer games are made specifically to have a high graphic power and run games and heavy programs like video editors.