These original portable music players sequestered us and turned listening to music into a solo performance.

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Those companies compete in the portable GPS market as well as the original equipment manufacturer installed GPS market.

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The original PowerBook laptop set the bar for portable, ergonomic laptops, and in 1998 the transparent, bulbous iMac almost single-handedly moved the world away from dull "beige box" computers.

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And four years after that, he took the stage to introduce the original iPod, the little white device that revolutionized portable music and kick-started Apple's furious comeback.

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The original MOGA is pocket-sized, streamlined and very portable.

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These included the original battery-powered pocket transistor radio, launched in 1955, and the first portable solid-state black-and-white television, in 1960.

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