Introduction to computers
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Transcript of Introduction to computers
INTRODUCTION TO COMPUTERS
WHAT IS A COMPUTER?Computer an electronic device, operating under the
control of instructions stored in its own memory unit
this memory unit can accept data – input manipulate data – process produce information – output store results for future use - storage
USES OF COMPUTERS Playing games. Solving problems. Doing homework. Watching movies. Listening music Browsing. Internet & E-mailing.
EXPANSION OF COMPUTERS
C-> Commonly O-> Operated M-> Machine P-> Purposefully U-> Used for T-> Technical E-> Education R->Research
RESOURCES OF COMPUTER
HardwareSoftwareUser
WHAT IS A HARDWARE?
All physical components of computer are hardware
EXAMPLES OF HARDWARE
KeyboardPrinterMouseScannerMonitorMicrophoneSpeaker
EXAMPLES OF HARDWARE
WHAT IS A SOFTWARESoftware is a computer program
It gives step by step instructions to the computer what to do and how to do.
It converts data into information.
SOFTWARE
TYPES OF SOFTWARE
System softwareApplication Software
WHAT IS A SYSTEM SOFTWARE
System software refers to files and programs that makesup our computer’s operating system.
System files includes library to functions, drives for printers and other hardware configuration files
System programs include assemblers, compilers, debuggers etc
WHAT IS APPLICATION SOFTWARE
Application software is a software designed for computer user to perform specific task.
Word processing, spreadsheets.
USER
User is one who knows how to use both hardware and software
WHAT ARE THE COMPONENTS OF A COMPUTER?
Input devicesProcessorOutput devicesCommunication devicesMemoryStorage devices
INPUT DEVICES
Key BoardMouse
MOUSE
TWO TYPES OF MOUSES
Mechanical / BallMouse
Optical /light Mouse
MECHANICAL MOUSE
Mechanical mouse has a
rubber ball, when the mouse
move, rubber ball rolls.
OPTICAL/LIGHT MOUSE
Optical mouse uses the
laser light to detect the
mouse movements.
It does not have a ball.
MOUSE
Every mouse has two button, left button and right
button.
Some mouse has a wheel in the center which is use
for scroll the document up and down.
We can click the mouse in several ways to perform
different tasks.
MOUSE
Left click : when you press and
release the left button once, it is
used to select icons & buttons,
open menu in windows etc.,
MOUSE
Right click : when you press and
release the right button once, it
is used to view properties, access
menu options & fundamentals of
the selected items.
WHAT IS INTERNET?
Internet is a world wide system of computer networks.
a network of networks user at any one computer can get the
information from any other computer through internet.
Some time internet is called as The Net.
WHAT IS WWW
www stands for world wide web This is the most widely part of the internet It works by using special protocols such as
HTTP HTTP is a simple method of cross linking
multiple pages together.
WHAT IS WEB BROWSER Using web, you can get billions pages of
information. To get this information you need to install
special software on your computer. This special software is called as web
browsers. Using web browsers to view different kinds of
information is called as surfing or browsing
POPULAR WEB BROWSERS ARE
Internet Explorer Mozilla Firefox Opera Safari Google Crome
WHAT IS EMAIL?
E-mail is same as normal letter, but it is exchanged in a different way i.e electronically
You can exchanged any type of information such as text, images, videos, office documents
The only thing you need to send and receive emails you must have E-mail address and internet connection.
You can create your own E-mail Id by using Yahoo,Gmail and hotmail.
SOCIAL NETWORKING SITES
Social Networking sites are web based services
It allows each individual to create public or semi public profile within secure system
Important social networking sites are Facebook, twitter, ibibo,orkut