computer system

Computer  System

Computer system is a combination of number of physical parts which are arranged is such a way that they achieve a common objective. Computer system can be divided into number of sub system which can work individually.

The common sub-system in a computer system are input unit, processing unit, processing unit, output unit, and storage unit. These components are called sub - systems because several other smaller components are involved in building up each of these units.

Computer system is a combination of input unit, processing unit, output unit and storage unit which work in and storage unit, which work in co-ordination with each order so as to form the single functional computer.

The basic operation f a computer are input, processing, output and storage which are performed by respective units of a computer system.

Input unit:

Input unit reads the data a and instructions form the user converts them into computer understandable from and transmit it to the processing unit of computer. It act s as a communication channel between user and the computer. Many input devices such as keyboard, mouse, joystick, light pen etc. forms an input unit. They read different form of input and converts those input into binary codes which is understood by computer.

Processing unit

Processing unit is commonly known as central processing unit.

CPU is the main processing unit which perform s ll the calculation and directs  and controls all the units of the computer system.

ALU: This units performs all the arithmetic operations such as addition, subtraction, multiplication and division.

CU: Known as control unit It manages all the computer system.