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first computer game pong
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first email sent
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first personal computer
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viking 1 landed on mars
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first cd
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apple mac released
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shuttle rocket challenger exploeds
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web browser
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20 million people online
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50 million people using the internet
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92 milion users on the internet
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john glenn returns to earth
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chips for pc are released
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water on mars
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wifi invented
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google reaches 8 billion pages
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youtube released
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twitter invented
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apple inroduces iphone 1
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ipad invented
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smart phones reaches 1 billion
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iphone 5 released
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first ipod released
