The year 2006 turned out to be stellar for the shipment of battery-powered portable electronic devices. Last year, consumers bought over 950 million cell phones, 220 million notebooks, 140 million MP3 players, 90 million DSCs, and 10 million GPS systems. Still other products are hybrid versions of two or even three of these product functions, such as portable media players (PMPs) or digital media broadcast products.
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