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Fundamentals of 1
Computer
Unit
Goal Glimpse
What is a Computer? Block Diagram of Computer
Components of the Computer How Does a Computer Work?
Computer Memory Measuring Unit for Memory
What Does Starting a Computer Mean? Disk Space Management
Managing Recycle Bin Disk Defragmentation
Shutting Down of a Computer Searching for Files or Folders
Computers are used in almost every aspect of life today. In education, they power online learning
and research, while in healthcare, they assist with diagnostics, patient records, and surgeries.
They control transportation systems like GPS and autopilots and are vital in communication
through emails, social media, and video calls. In this unit, you will learn how computers work and
how to use them to do some fun and useful things.
WHAT IS A COMPUTER?
A computer is an electronic device that can process data, perform
calculations, store information, and execute tasks based on instructions
provided by users. It can be programmed to carry out various functions,
making it a versatile tool for a wide range of applications. We can simply
say that computer:
accepts the data as input
processes the data
generates the information as output
store the information in storage devices
Why Do We Need a Computer?
Computers have become an important part of our lives in many ways. We need computers:
For Learning: To watch educational videos, attend online classes, and search for information.
In Healthcare: To help doctors keep patient records and use special machines for treatment.
Fundamentals of Computer 11

