Explain the functional units of a computer
Answers
Functional units of computer are :-
Input unit
Input units are used by the computer to read the data. The most commonly used input devices are keyboards, mouse, joysticks, trackballs, microphones, etc.
Central processing unit
Central processing unit commonly known as CPU can be referred as an electronic circuitry within a computer that carries out the instructions given by a computer program by performing the basic arithmetic, logical, control and input/output (I/O) operations specified by the instructions.
Memory Unit
The Memory unit can be referred to as the storage area in which programs are kept which are running, and that contains data needed by the running programs.
Arithmetic & logical unit
Most of all the arithmetic and logical operations of a computer are executed in the ALU (Arithmetic and Logical Unit) of the processor. It performs arithmetic operations like addition, subtraction, multiplication, division and also the logical operations like AND, OR, NOT operations.
Control unit
The control unit is a component of a computer's central processing unit that coordinates the operation of the processor. It tells the computer's memory, arithmetic/logic unit and input and output devices how to respond to a program's instructions.
Output Unit
The primary function of the output unit is to send the processed results to the user. Output devices display information in a way that the user can understand.