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The first walkman used casset tapes to play music portably.
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the discman commercialThe discman is a inovation because it plays compact cds instead of casset tapes used in the walkman in 1979,but still portable.
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This is a inovantion because the mp3 player isnt the first has music on it it doesnt need cds/cassete tapes
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the first commercial of the ipodThe iPod is a inovation because the walkman was the first portable music player but, instead of down loading the music from a computer you can down load it from the internet.
