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Cassettes were in style. Cassette tapes are made of polyester type plastic film with a magnetic coating
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Cd players were being sold. A portable cd player is a portable audio player used to play compact discs.
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The first mini disc was sold in early 1990
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The flash based mp3 was sold, for the first time in late 1990's
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The walkman similar to the flash based mp3 was made.
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The Ipod touch was made.
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The Iphone4 was made.
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The Ipod 5 was made and sold.
