2. Roll No. : 315134 Class : 7th
Subject : Computer Time : 35 Min.
Previous knowledge testing
3. Roll No. : 315134 Class : 7th
Subject : Computer Time : 35 Min.
Q. – What is Computer?
4. Roll No. : 315134 Class : 7th
Subject : Computer Time : 35 Min.
Q.- Define Hardwar?
5. Roll No. : 315134 Class : 7th
Subject : Computer Time : 35 Min.
Q.- What is Software?
6. Roll No. : 315134 Class : 7th
Subject : Computer Time : 35 Min.
Q.- Explain types of Hardware?
7. Roll No. : 315134 Class : 7th
Subject : Computer Time : 35 Min.
A Computer is an electronic device that accepts data ( Input ) and ,process data
arithmatically and logically ,produce information (output).
It is divided into two main categories
1. Hardware
2. Software
INTRODUCTION
8. Roll No. : 315134 Class : 7th
Subject : Computer Time : 35 Min.
• Hardware is the phisical aspect of computers , telecommunication and other
devices.
• It includes not only the computer proper but also the cables , connectors ,
power supply units and peripheral devices such as keyboard , mouse , audio
speaker and printers.
HARDWARE
9. Roll No. : 315134 Class : 7th
Subject : Computer Time : 35 Min.
Internal Hardware is also called components. It includes
• CPU
• MOTHERBOARD
• RAM
• ROM
TYPES OF HARDWARE
10. Roll No. : 315134 Class : 7th
Subject : Computer Time : 35 Min.
• It is the brain of computer.
• Most of calculations take place here
• Two typical components of a CPU are Arithmetic Logic Unit and Control Unit
• It is the main circuit board of a microcomputer.
• It contains the CPU , Memory , expension slots and all the controllers required to controll
the standard hardware system.
CENTRAL PROCESSING UNIT (CPU)
MOTHERBOARD
11. Roll No. : 315134 Class : 7th
Subject : Computer Time : 35 Min.
• Ram is a place in the computer where the operating system ,
application programs and data in the current use are kept.
• It is a temporary memory and can be compared to a person’s short term memory.
• It is a technology that allows you to write data only once .
After the data is has been written , it can be read an unlimited number of times.
RANDOM ACCESS MEMORY ( RAM)
READ ONLY MEMORY ( ROM)
12. Roll No. : 315134 Class : 7th
Subject : Computer Time : 35 Min.
Input hardware consist of external devices by which we give information and
instructions to the computer .
Common input devises are :
• Keyboard
• Mouse
• Scanner
INPUT HARDWARE
13. Roll No. : 315134 Class : 7th
Subject : Computer Time : 35 Min.
A display screen used to present output from a computer , video camera , VCR or other video
generator .
MONITOR
PRINTER
In computers a printer is a device that accepts text and graphic input from a computer and
transfer the Information to paper .
SPEAKER
Speakers or headphones to an output port to hear the audio produced by the computer.
14. Roll No. : 315134 Class : 7th
Subject : Computer Time : 35 Min.
Connecting devices allows the hardware devices to connect to each other.
Common devices are
• Modem
• LAN cord
CONNECTING HARDWARE
15. Roll No. : 315134 Class : 7th
Subject : Computer Time : 35 Min.
• Modem connects a personal or portable computer to dial up network
through a regular network line.
MODEM
LAN Cord
• A local area network card is used to provide wireless internet access to
computer users in home or roaming networks
16. Roll No. : 315134 Class : 7th
Subject : Computer Time : 35 Min.
A computer storage device is any type of hardware that stores data.
Common devices are
• Hard Disk
• Floppy Disk
• CD ROM
STORAGE HARDWARE
17. Roll No. : 315134 Class : 7th
Subject : Computer Time : 35 Min.
Magnetic disk on which you can store computer data. The term hard is used to distinguish it
from a soft or floppy disk.
HARD DISK
FLOPPY DISK
Flexible plastic disc coated with magnetic material and covered by a protective jacket, used
primarily by computers to store data magnetically.
CD ROM
A CD-ROM is a CD that can be read by a computer with an optical drive.
18. Roll No. : 315134 Class : 7th
Subject : Computer Time : 35 Min.
• A set of instructions that enable physical components of a computer to
work in a synchronised way is known as software.
• This set of instructions is often called program.
• Computers cannot do any useful work without instructions from software.
SOFTWARE
19. Roll No. : 315134 Class : 7th
Subject : Computer Time : 35 Min.
Computer software is also divided into four major types :
• System software
• Programming software
• Application software
• Utility software
TYPES OF SOFTWARE
20. Roll No. : 315134 Class : 7th
Subject : Computer Time : 35 Min.
System software helps in running computer system and computer hardware.
Main system softwares are:
• Operating system
• Device drivers
SYSTEM SOFTWARE
21. Roll No. : 315134 Class : 7th
Subject : Computer Time : 35 Min.
• An operating system is an interface between hardware and user ; it is
responsible for for the management and coordination of activities.
OPERATING SYSTEM
DEVICE DRIVER
• In computing , device deiver is a program aloowing higer level computer
programs to intract with a hardware device.
22. Roll No. : 315134 Class : 7th
Subject : Computer Time : 35 Min.
• It enables one to surf the web. Example MS Internel Explorer.
WORD PROCESSING SOFTWARE
• Enables user to create , edit the document. Example MS Word.
APPLICATION SOFTWARE
It enables the users to accomplish certain specific task .
Following are the types of application software
WEB BROWSING SOFTWARE
23. Roll No. : 315134 Class : 7th
Subject : Computer Time : 35 Min.
• Enables users to create document and perform calculations.
• Example MS Excel etc.
SPREAD SHEET SOFTWARE
DATABASE SOFTWARE
• Allows user to store and retrieve large amount of data.
• Example MS Access etc.
PRESENTATION GRAPHICS SOFTWARE
• Allows user to create visual presentation.
• Example MS PowerPoint etc.
24. Roll No. : 315134 Class : 7th
Subject : Computer Time : 35 Min.
DISK DEFRAGMANTORS
• It detects computer files whose content are stored on the hard disk in
disjointed fragments and moves the fragments together to increase efficiency.
UTILITY SOFTWARE
Utility software helps in the management of computer hardware
and application software.It performs a small range of tasks. Some
typical examples of utility software are :
25. Roll No. : 315134 Class : 7th
Subject : Computer Time : 35 Min.
• This utility makes a copy of all information stored on a disk or restore the entire disk or the
selected files.
BACKUP
DISK PARTITIONERS
• It divides an individual drive into multiple logical drivers , each with its own file system
which can be mounted by the operating system and treated as an individual drive.
ANTI VIRUS
• These utilities scan computer for viruses.
26. Roll No. : 315134 Class : 7th
Subject : Computer Time : 35 Min.
• Text editors
• Complilers
• Interpreters
PROGRAMMING SOFTWARE
It is the most commonly known and popular form of computer software.
These softwares come in the form of tool that assist a system programmer in
writing computer program.
Programming softwares include :
27. Roll No. : 315134 Class : 7th
Subject : Computer Time : 35 Min.
Thank you
