Touchpad iPrime Ver 1.1 Class 3

By Team Orange

Computer Science Textbook Designed for Joyful Learning

KEY FEATURES
- National Education Policy 2020
- Tech Funda: This section provides a practical information or tip to the students.
- Clickipedia: This section provides interesting computer facts.
- Hands-On: This section contains an activity for Home assignment.
- QR Code: Scan the QR Code given on the first page of each chapter to start chapter animation.
- Crack the Code: This section has puzzle or fun based activity to help understand the concepts better.
- Digital Resources

DESCRIPTION
Touchpad iPRIME (Ver 1.1) series based on Windows 7 & MS Office 2010 is comprehensively designed as per the new ICSE syllabus. Learning is done best when it’s fun-filled and activity based. To ensure that the content intrigues the students at all times and keeps them interested throughout the course of the book, we have included interesting key features like Student Corner, Tech Funda, Clickipedia, Comp Caution, Reboot, One Touch Learn, Let’s Do It, Crack The Code, Hands-On, Fun In Lab, Teacher’s Corner, Worksheet, Test Sheet, Project, Speech Drill, Supplement Pages and Glossary.

WHAT WILL YOU LEARN
You will learn about:
- Fundamentals of computers
- ICT Tools
- Computational Thinking
- Computer System
- Operating System
- Word Processor
- Internet
- Paint
- File Management

WHO THIS BOOK IS FOR
Grade - 3

TABLE OF CONTENTS
1. A Computer System
2. GUI Operating System—An Introduction
3. Word Processor—An Introduction
4. The Internet—An Introduction
5. Fun with Paint
6. File Management— Organization of Folders
7. Project Work
8. Explore More (Evolution of Windows)
9. OGO Cyber Sample Questions
10. Glossary

• Language: English
• Publisher: Orange Education Pvt Ltd
• Release date: Nov 20, 2021
• ISBN: 9789390475391

Book preview

1 A COMPUTER SYSTEM

A computer is an electronic machine that is made up of various devices that help you to enter the data (input) through keyboard or mouse, process it using the CPU, and give the results (output) that can be seen on the monitor or printer.

HARDWARE

All the physical components of a computer system are called hardware. These are the parts that we can see or touch. Some of these parts are visible outside, like keyboard, monitor, mouse, etc. Some are located inside the CPU box such as CPU, hard disk, etc.

Hardware devices are further classified as shown:

Input Devices

A computer accepts data and instructions through input devices. Some of the input devices are keyboard, mouse, scanner, joystick, microphone, etc.

Processing Device

A computer converts the input into meaningful information through the processing device. The CPU (Central Processing Unit) is the processor. It is the brain of a computer that does all the calculations, runs all the programs and manages all the operations. The CPU is a chip that is placed inside the CPU box.

The working of a CPU can be shown with the help of the following block diagram:

Arithmetic and Logic Unit (ALU)

The ALU does arithmetic calculations like addition, subtraction, multiplication, division and so on. It also does comparisons like greater than, lesser than, equal to and so on.

Control Unit (CU)

The CU coordinates between all the parts of the CPU. The CU gets data and instructions from the memory unit and passes them on to the ALU in a step-by-step manner.

Memory Unit (MU)

The MU stores data and instructions given to the computer and the result of the processing.

Output Devices

A computer displays the results of the processed data through the output devices. Some of the output devices are monitor, printer, speakers,