Introduction to Computers

Natural and Man made things

Many things around us. Some are natural things while the others are man-made.

• Natural things
• Trees
• Birds
• Animals
• Fruits
• Mountains....
• Man-Made things
• Cars
• Penncils
• Watches
• Clock
• Tv
• Radio….

Machines

Machines are man made things. They make our work easy. They also help us do our work fast and save our time.

Eg:

• Fan –helps us stay cool in summer.
• Calculator - helps us calculate
• Aeroplane –helps us travel long distance in a short time
• Sewing machine – helps us stitching cloths
• Bicycle – helps for travelling short distance.

Note:
Some machines work on electricity or batteries

• Tv
• Radio
• Refrigerator
• A/C
• Computers...

Some machines do not need electricity or batteries

• Bicycle
• Sewing machine…

Computer

• Computer is also a machine. 
• It runs on electricity.
• Work very fast
• Makes our work easy
• Never gets tired
• Can store lot of information
• Solve problems very fast

How computer differ from man?

Computer	Man
Work Very Fast	Cannot work as fast as computer
Does not get tired, keep working long hours	Get tired
Remember lot of information in memory	Cannot remember lot of information
Cannot think and feel	Can think and feel
Does not get bored doing same again and again	Get bored
Cannot take decisions by its own	Can take own decisions
Runs on electricity	Does not need electricity

A computer is an electronic machine. It is used at many places. It helps us to do our work very fast and easily. It works very fast. Computer has memory like us.

Uses of Computers

Computers plays an important role in our everyday life. Some of the areas where computers are used.

• At Home
• Drawing pictures.
• Typing leters
• Paying bills
• Booking tickets
• Listening Music
• Watching movies
• Playing games
• Communicating relatives and friends.......
• At Shops
• Storing Items with details
• Making bills
• Find the available stock
• Order necessary items
• Find our obsolete items
• Find unmoving stock
• At Schools
• Type and prepare Circulars
• Prepare test papers
• Teaching
• Prepare time tables
• Maitain students’ records
• Maintain assests of schools
• At Offices
• Send and receive mails
• Communicate with others
• Store data
• Doing Various Calculations
• Prepapre Accounts
• Prepare budgets
• Prepare financial statements
• Railway stations and Airports
• Keep track of arrival and departure
• Maintain schedule
• Booking seats
• At Hospitals
• Maintain records of patients
• Various testing (Eye, body…)
• Doctor Channelling
• Prepare reports

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