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PROLOGUE

School reopened for new session. Gowri and Aryan were happy to be back to school. They were
excited to share their learning during the break after final exams.

Gowri: Do you know we will have computer classes in class 3 for
two periods each week?

Aryan: Yes, I am so thrilled. Online classes have taught us so
much and thanks to technology we didn’t miss on our learning
during the pandemic.

Gowri: Yes, But do you know that we can do so much on computers
apart from just attending online classes. Like music, calculation,
drawing and making projects/assignments. I have learnt so much
about these things.

Aryan: Is it? Will you share your learning with me?
Gowri: Why not. I would love to share. Before that let

me tell you little about computers. As you know, now
a days computer is used in almost all the fields like
Home, Education, Government, Hospital, Hotels, and
Games etc. But what is a computer? Computer is an
Electronic Device which takes raw data as an input,

processes it and gives us the desired output. It is a
collection of Hardware, Software. Before we proceed
let me show you how to switch on the computer.

STARTING AND SHUTTING DOWN OF COMPUTER SYSTEM

How to Start a Computer System?

Step 1 Step 2 Step 3 Step 4

Switch on the If you have UPS, Locate the power Press power button on
power supply. switch it on. button on CPU and monitor to switch it on.

press it softly.

Prologue 9