Processor Internal Components

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In any computer system, the most essential component is the processor or the CPU (Central Processing Unit), which is also commonly referred to as the microprocessor. The Computer Processor processes information and interfaces with many other system elements to retrieve data to be processed and return the data that has been processed.

Generally, the processor performs the following functions in a computer system:-

Fetches, decodes and executes instructions obtained from software programs
Performs arithmetic calculations
Controls and supports the timing of each operation

The speed of the computer processor is a major factor in determining the performance of the PC, that is, how fast instructions will be executed.