Computer System

A complete computer system consists of four parts: - Hardware, Software, User and Data.
1. Hardware: - hardware is the physical or mechanical parts of the computer which can be touched and seen. Computer hardware include keyboard, monitor, CPU, mouse, motherboard, RAM etc
2. Software: - software is a group of programs that tell the computer what to do and how to do. This software is such part of the computer that cannot be touched. Hardware cannot be operated without software. software can be divided into three major groups:-
 Application software:
 System software:
 Utility software:
3. Users: - users are the people who use or operate the computer. No computer is fully autonomous. People design, build, program and repair the computer systems; any data input is given by the users. Programs are fed to computer by the users and the information generated by computer is also for the user purpose. So, user is also a component of the commuter system.
4. Data: - A data consists of raw facts, which the computer stores and reads. The data consists of letters, numbers, sound, or images, the data may be entered form keyboards, floppy disks, CD-ROMs, within the computer, data is organized in the form of files.