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Charles Babbage was a English engineer and polymath, who created the first mechanical computer. first date: 19th century, second date: 1927, third date: 1950, fourth date: 2000, fifth date: 2012-present
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digital electronic computer made in 1950s
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first transistorised computer was operational by 1953.
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portable computers where made in the 2000s, and grew popular.
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computers or laptops also tablets were made in 2010 and present.