The microprocessor is a clock-driven semiconductor device consisting of electronic logic circuits manufactured by using either a large-scale integration (LSI) or very-large-scale integration (VLSI) technique.
The microprocessor is capable of performing various computing functions and making decisions to change the sequence of program execution.
In large computers, a CPU implemented on one or more circuit boards performs these computing functions.
The microprocessor is in many ways similar to the CPU, but includes the logic circuitry, including the control unit, on one chip.
The microprocessor can be divided into three segments for the sake clarity, arithmetic/logic unit (ALU), register array, and control unit.