The Discman was invented by Katsuaki Tsurushima in 1983
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There are a number of places where one can purchase a Sony Discman. One can purchase one from the Sony website itself, or from websites such as eBay and Amazon.
The Sony Corporation - It was a step-up from their original 'Walkman' device
Discman was created in 1984.
The Sony PSP was invented in Japan.
The Sony Discman series are a classic and commonly considered the benchmark CD player. They're only $50 or so.
The PlayStation 3 was invented by Sony in Japan.
Sony
Sony.
A Japanese Zaibatsu Sony
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