Introduction to Computer
Category : 1st Class
Introduction to Computer
Introduction
A computer is a machine, which manipulates data according to a list of instructions. We use computers for so many things, like playing video games, solving mathematical problems, drawing pictures, watching movies, listening to music, using internet e-mailing, etc.
The device by which we type the letters, give commands to the computer is an input device called CPU (Central Processing Unit). A part of a computer performs its internal task and computers display information through output devices. Therefore, a computer has three basic parts, Input, CPU and Output.
Few important features of a computer are:
v It is a machine.
v It works on electricity.
v It makes our work easier.
v It is very fast as compared to human beings.
v It is very accurate, it never make mistakes.
v It never gets tired.
v It has in-built memory where it can store a large number of data.
Drawbacks of a Computer
v Computer has no feelings.
v It cannot work on its own. It needs a person to work on it and to give instructions to it
What is a Machine?
v A machine is a tool which makes our work easier.
v It saves our time and energy.
v Machines work faster than human beings.
Example of Machines are:
A television set is used for entertainment.
An iron is used to iron clothes.
A car is used to for travelling.
A mobile is used for making phone calls.
Things to Remember
v Machines work faster than human beings and are made by man.
v Computer is a machine.
v It is used to play games, to draw pictures, for calculation and also to play game?
v A computer has three basic part, input, CPU and output.
Answer Me
1. Tick ( √ ) the machines.
2. Write (T) for True or (F) for False for the following statements.
1. Computer is very fast and accurate. |
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2. Computer works without electricity. |
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3. Computer makes work easy. |
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4. Computer never gets tired. |
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5. Computer always makes mistakes. |
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6. Computer has no storage. |
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7. Computer helps in playing games. |
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8. Computer is not a machine. |
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