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A central processing unit (CPU) is the electronic circuitry within a computer that carries out the instructions of a computer program by performing the basic arithmetic, logical, control and input/output (I/O) operations specified by the instructions. Understand that all a CPU does is take numbers in binary and will either use binary logic or arithmetic (which uses binary logic) to manipulate those numbers according to the commands and instructions given. Please note all use of a computer boils down to this, every mouse move, mouse click, keyboard press, file copy all the way to most sophisicated of complex internet browsing usage all comes down to the data being represented in binary and the CPU manipulating each binary number on each clock cycle, using binary logic operation. A CPU is broken into the following: |