What Can You Learn from a Cell Phone? Almost Anything!.

One and a half billion people, all over the world, are walking around with powerful computers in their pockets and purses. The fact is they often do not realize it, because they call them something else. But today 's high-end cell phones have the computing power of a mid-1990s personal computer (PC)—while consuming only one one-hundredth of the energy. Even the simplest, voice -only phones have more complex and powerful chips than the 1969 on-board computer that landed a spaceship on the moon.

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