Lesson 2: Parts of Computer and
their Uses
AIM
In this lesson you will
learn about the different parts of computers:
CPU Monitor Keyboard Mouse
Two additional parts will be also covered:
Speakers
& Printer
LESSON OUTCOME
After you have studied
this lesson, you will be able to:
Identify the different parts of the computer and
know their use
Just as there are different parts of our
body, a computer has
different parts. Let us learn
what are these.
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Now let us
learn in detail about each of the above parts of the computer
CPU
CPU
(central processing unit) is the brain of the computer. Just as our brain
controls all the different parts of the body and makes them work together, the
CPU controls all other parts of the computer and makes them work together. All
other parts of the computer are connected to CPU. Just as our brain stores a
lot of information, the CPU is also the store - house of all the information
in the computer.
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Monitor
A monitor
is like a television; it shows us what work the computer carries out. This has
a power (on/off) switch. Turning the monitor off does not
turn off the computer. There may also be other buttons to be used for adjusting
the image. The glass surface of the monitor is called the screen,
whereas the monitor is the entire box with the screen, case, stand and
buttons.
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Monitor
Keyboard
The keyboard is made of several small buttons called 'keys'. Each key
corresponds to a number or a letter or some special function. Just as you use a
pencil to write on a paper, the computer needs a keyboard to tell it what to
do.
Keyboard
Mouse
A mouse is
a pointing device that controls the movement of a pointer on the screen.
A mouse can have one to three buttons that can be clicked to perform
actions on the computer. Clicking the mouse once is called a single click
while clicking it twice in quick succession is called a double click.
Depending on which side the clicked button of a mouse is, it may be called a right
click or a left click.
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Mouse
Additional parts of computer
Speakers
Sounds produced by
the computer or songs played on it are heard through the speakers.
Printer
It is a device that helps you to print what you see on monitor on a
paper.
Printer
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