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In a relatively short span of time, computers have evolved from huge mainframes to smalland elegant desktop computers, and now to low-power, ultra-portable handheld devices.With each passing generation, computers consisting of processors, memories and peripheralsbecame smaller and faster. For example, the first commercial computer UNIVACI costed $1million dollars, occupied 943 cubic feet space and could perform 1,905 operations persecond [94]. Now, a processor present in an electric shaver easil
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