World's Smallest Computer, Can Fit on a Pen-Tip

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As time passes the size of computers become smaller and smaller but the latest smallest computer of the world is just one square millimeter. This computer is developed at University of Michigan which believes that although it is smaller in size but it still contains impressive amount of power.

This computer contains: Ultra low-power microprocessor, a pressure sensor, memory, a thin-film battery, a solar cell and a wireless radio with an antenna for data sending purpose.