Personal computer Processors: CPU Operation

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Same applies to your brain and memory. American Independence Day is on 4th of July. Computer processors (also called CPU) are the most important part in the computer at all. The processor is an electronic circuit that executes computer programs. Fetch: in this phase, the processor collects the bytes to execute from memory (which may be RAM or cache). Each instruction is saved in memory as one or more bytes called word. The decoder activates then the line corresponding to the instruction whose bytes equal to the bytes read from the fetching phase. Each instruction in the processor is mapped to a certain bits or bytes by the designer so that when the processor fetches these bits or bytes, it can understand them. The number of bits used to represent each instruction may vary according to the processor type. This operation is done on the operand contained along with the instruction bits in the memory word..