1. Definition of computer
A computer is an electronic device
that receives data, processes data,
and produces a result.
• C: Common
• O: Oriented
• M: Machine
• P: Particularly
• U: Used In
• T: Trade
• E: Electronics and
• R: Research
Functions of Computer
4. Hardware and Software
A computer is made up of two components:
Hardware: Tangible parts of the computer.
6. •Input Devices:- These are the devices through which we can
enter our information or data to the computer system.
•Output Devices:- These are the devices through which we
can get our result from the computer system.
•Storage Devices:- A device capable of storing data. The
term usually refers to mass storage devices, such as disk and tape
Hardware is further made up of four parts:
7. Game controller
Mouse Track BallKeyboard
8. Output Devices
9. Storage Devices
Hard Drive CD DriveFloppy Drive
10. Software: Set of instructions written by programmers.
•MS Word, MS PowerPoint etc,
•Windows Media Player, Winamp
11. Types of software
System Software Application Software
12. Types of Software:
Includes the operating system and
all the utilities that enable the computer to function.
Includes programs that do real
work for user. For example, word processor, spreadsheet and
database management system ms fall under the category of