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the credit card was invented
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the transistor radio is a small portable radio that uses transistor-based circuitry
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https://www.thoughtco.com/1950s-tech-and-science-1992485 hard disks are the main storage of a computer
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https://www.thoughtco.com/1950s-tech-and-science-1992485 computer modems are devices for modulation and demodulation
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https://www.thoughtco.com/1950s-tech-and-science-1992485 the audio cassette is a cassette of audiotape
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https://www.thoughtco.com/1950s-tech-and-science-1992485 spacewar was the first computer video game invented
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https://www.thoughtco.com/1950s-tech-and-science-1992485 the video disk is a general term for a laser- or stylus-readable random-access disc
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https://www.thoughtco.com/1950s-tech-and-science-1992485 a small plastic disc on which music or other digital information is stored
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http://www.techradar.com/news/world-of-tech/7-technologies-to-thank-the-1970s-for-657269/2 The email was invented in 1971
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http://www.techradar.com/news/world-of-tech/7-technologies-to-thank-the-1970s-for-657269/2 The first digital camera was created by Kodak
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http://www.techradar.com/news/world-of-tech/7-technologies-to-thank-the-1970s-for-657269/2 The first pocket calculator was invented for easier use and it was portable
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http://www.techradar.com/news/world-of-tech/8-technologies-to-thank-the-1980s-for-635764 The first personal computer was created
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http://www.techradar.com/news/world-of-tech/8-technologies-to-thank-the-1980s-for-635764 The first mobile cell phone was created so people could use the phone while moving around
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http://www.brighthub.com/education/homework-tips/articles/123405.aspx the world wide web was created and changed the world forever
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http://www.telegraph.co.uk/technology/2016/03/09/most-important-inventions-of-the-21st-century-in-pictures/tinder/ Tinder, an online matchmaking app, was created
