Central Processing Unit
The central processing unit (CPU) is the center of all computer processing activities. It is here that all is controlled, all data are manipulated and arithmetic/logic computations are performed.
Inside the central processing unit, there are the arithmetic/logic unit (ALU) and the control unit (CU).
The arithmetic/logic unit is used to perform the four basic arithmetic operations, addition, subtraction, multiplication and division.
Logic functions are used to compare values. They are >=, <=, =, <, > and <>. All computer applications from typing a document to supercomputer simulation are achieved through these simple operations.
The control unit is responsible for managing the traffic of the central processing unit (CPU). It interprets and carries out computer operations contained in computer programs.
It moves instruction from the memory to the registers in the control unit. The control unit executes only one instruction at a time and executes it so quickly that the control unit appears to do many things simultaneously.
The central processing unit capacity is often described in word sizes. The word is the number of bits (such as 16, 32, or 64) that can be processed at one time by the central processing unit.
Therefore, the more bits of the word size, the more powerful is the CPU or central processing unit.
Central Processing Unit
