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CU
Last modified: Tuesday, January 17, 2006 

Short for control unit, it is a typical component of the CPU that implements the microprocessor instruction set. It extracts instructions from memory and decodes and executes them, and sends the necessary signals to the ALU to perform the operation needed. Control Units are either hardwired (instruction register is hardwired to rest of the microprocessor) or micro-programmed.
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Microprocessors
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bit

CPU

data

execute

microprocessor

MPU
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