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Chapter 03 - Number Systems

This lesson covers the basic number systems used in computing—Decimal, Binary, Octal, and Hexadecimal. Students will learn how to convert between these systems and perform simple binary arithmetic. It provides a strong foundation for understanding how computers represent and process data in ICT.

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Brandon Baines
Beginner
Units

Course Overview

This lesson introduces students to the fundamental concept of number systems, which form the basis of all digital computing. Students will explore various number systems used in ICT, including Decimal, Binary, Octal, and Hexadecimal. The lesson covers conversions between systems, binary arithmetic (such as addition and subtraction), and the significance of each system in computing.

Through engaging examples, real-life applications, and step-by-step explanations, students will develop the skills needed to understand how computers represent and process data. This lesson lays a strong foundation for advanced topics like data representation, logic gates, and computer architecture.

By the end of this lesson, students will be able to:

  • Identify different number systems and their uses in ICT.

  • Convert numbers between decimal, binary, octal, and hexadecimal.

  • Perform basic binary arithmetic operations.

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Course Instructor

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Brandon Baines
Educator
ictwithbrandon@gmail.com

I’m Brandon Baines, and I am dedicated to helping students succeed in their GCE Advanced Level ICT studies. I had the honor of achieving District Rank 1st place in the Gampaha District and Island Rank 3rd  in my A/Levels in 2017. I later completed my bachelor’s degree in IT and Management at the University of Moratuwa and gained valuable industry experience while training at a leading software engineering company in Sri Lanka.

My passion for teaching led me to focus on private tutoring. With my combined experience in academics, industry, and the techniques I used to become an Island Ranker, I have developed methods to simplify complex ICT concepts and make learning clear, effective, and engaging.

I use a modern approach to teaching, which includes e-learning techniques and practical activities tailored for today’s students. Join me to explore the exciting world of ICT, gain the knowledge and confidence to excel in your A/Levels, and build a strong foundation for your future.

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This Course Includes:
Duration
10 Hours
Course Level
Beginner
Lessons
2
Tags
Language
English
Price
Free
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