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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“The ordinary literary man, even though he be an eminent historian, is ill-fitted to be a mentor in affairs of government. For ... things are for the most part very simple in books, and in practical life very complex.”
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