A microprocessor is retained on a single chip and is part of the central processing unit (CPU) which is the brains of the computer .There are two microprocessor components; one is the control unit, and the second is Arithmetic-logic unit (ALU). The control unit program direction on which way the data flows. The (ALU) has two types of operations; Arithmetic operation, which maintains addition, subtraction, multiplication and division; and Logical operation, that maintains comparisons such as equal to, less than and greater than. The chips capacities express the word size, 16 bits, 32 bits, and 64 bits. The number of bits determined the amount of data it can process at one time. The specialty processors are specifically designed to handle special coprocessor and Graphics Processing Unit (GPU), like displaying 3D images or encrypting data.