Computer
Notes
Prepared by : Nadeem Ashraf Janjua
Q
|
Why we use computer in Schools ?
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Ans
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Ø
To prepare result.
Ø
To make time table.
Ø
To type letters.
Ø
For learning and understanding.
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Q
|
Why computer is used in Banks?
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Ans
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To keep account of customer’s money to
make entries is passbooks.
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Q
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What is the use of computer in Offices?
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Ans
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Ø
To type letters and reports.
Ø
To prepare salary slips.
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Q
|
Why we use computer at Home?
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Ans
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Computer are used at home
Ø
To draw picture
Ø
To play games
Ø
To listen music
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Q
|
What is the use of computer in
Shops?
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Ø
To make bills
Ø
To keep record of items
Ø
To record the price of items
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Q
|
What is the use of computer in
Hospital?
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Ans
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Computers are used in hospital to keep
the record of patient to diagnose the disease.
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Q
|
Why computer used in Railway,
Airport and Food Center?
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Ans
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Computer are used to
Ø Record of Tickets
Ø For Reservations
Ø For price Record
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Q
|
What are three essential parts of
computer?
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Ans
|
Ø
CPU
Ø
Keyboard
Ø
Monitor
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Q
|
What other devices makes a computer
useful?
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Ans
|
Ø
Mouse
Ø
Keyboard
Ø
Printer
Ø
CD
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Q
|
What is a Keyboard?
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Ans
|
ü
Keyboard is an input device
ü
It looks like a typewriter
ü
It has many keys to enter data into computer
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Q
|
What is CPU?
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Ans
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CPU (Central Processing Unit) is the
brain of computer that performs all the calculation.
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Q
|
What is the brain of Computer?
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Ans
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Monitor is an output device that shows
the result of work done by the computer .
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Q
|
What is (VDU)?
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Ans
|
Monitor is also known as VDU. The full
form of VDU is video Display Unit.
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Q
|
What is Mouse?
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Ans
|
Mouse is a input device. It is used to
click and select the items. It has two button and a wheel. A mouse is kept on
mouse pad.
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Q
|
What are the types of Mouse?
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Ans
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There are two types.
ü
Mechanical Mouse (Has a track Ball)
ü
Optical Mouse (Has laser beam)
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Q
|
What is a printer?
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Ans
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Printer is an output device it prints
the result on paper.
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Q
|
What is a Floppy Disk?
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Ans
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Floppy is a storage device. A floppy
has a square shape and 3.5 inches in size.
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Q
|
What is CD?
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Ans
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The full form of CD is Compact
Disk. It is a storage device.
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Q
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What is Digital Video Disk?
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Ans
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Digital Video Disk is also known as
DVD. It is a storage device.
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Q
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What is USB?
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Ans
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USB stands for Universal Serial Bus.
USB flash drive is portable device. It is fast and small in size, and store
large data.
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Q
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What is Pen Drive?
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Ans
|
USB (Universal Serial Bus) is also
known as Pen Drive.
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Q
|
What is the difference between CD
and DVD?
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Ans
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CD
ü
It Stores small amount of Data
|
DVD
It
Stores Large amount of Data
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Q
|
What is the difference between
keyboard and mouse?
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Ans
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Keyboard
ü
Keyboard is used enter text
|
Mouse
Mouse is used to Click and select
program
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Q
|
What is the difference between
Monitor and Printer?
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Ans
|
Monitor
ü Monitor shows result on screen
|
Printer
Printer prints result on paper
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Q
|
What happens on the screen when you
move mouse on Mouse Pad?
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Ans
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When we move mouse on mouse pad an
arrow like pointer mouse on the screen.
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Q
|
What is the use of Storage devices?
Give name of two devices.
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Ans
|
Storage devices are used to store
data. Some are CD, DVD, USB, Floppy.
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How
does a Computer Work
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Q
|
Name the three major tasks
performed by the computer?
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Ans
|
The three major tasks are
·
Input
·
Processing
·
Output
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Q
|
Name the two parts of computer which
perform input function?
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Ans
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The three major tasks are
·
Keyboard
·
Mouse
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Q
|
Name the two parts of computer
which perform output?
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Ans
|
The three major tasks are
·
Monitor
·
Printer
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Q
|
What do you mean by processing?
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Ans
|
The calculation work is called processing
For Example!
ü
Adding two number is called processing 2+2=4
ü
Making Juice is processing
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Q
|
What is input? Explain with
example.
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Ans
|
The data which you give to compute is
called input. For Example
ü
Enter two number 7,7
ü
Put the Orange in Juice
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Q
|
What is Output? Explain with
example.
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Ans
|
The result of work done by the
computer is output.
For Example.
ü
Result of two number addition is 14
ü
The result is Juice in glass
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Q
|
Write two examples of input,
Process and Output?
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Ans
|
v Adding two number
|
v
Making Orange Juice
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Input
Process
Output
|
Enter two number
7,7
Add two number 7+7
Result =14
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Print orange in Juicer
Make the Juice
Juice in Glass
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THE END
Nadeem ashraf janjua
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