Practical Overview
Most of a processor's operations are performed by one or more ALUs. An ALU loads data from input registers, an external control unit then tells the ALU what operation to perform on that data, and then the ALU stores its result into an output register. The control unit is responsible for moving the processed data between these registers, ALU and memory.
Read more about this topic: Arithmetic Logic Unit
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“War-making is one of the few activities that people are not supposed to view “realistically”; that is, with an eye to expense and practical outcome. In all-out war, expenditure is all-out, unprudent—war being defined as an emergency in which no sacrifice is excessive.”
—Susan Sontag (b. 1933)
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