Lec-2.1.3:Hexadecimal System | Class 9 Computer Science | Base 16 Number System Explained

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In this lecture, we cover the Hexadecimal Number System, an important topic from
Class 9 Computer Science.
The Hexadecimal System (Base 16) is widely used in computers and digital electronics. It uses 16 symbols: 0–9 and A–F, where:
A = 10
B = 11
C = 12
D = 13
E = 14
F = 15
📌 Topics Covered in This Lecture:
What is the Hexadecimal Number System?
Base (Radix) of Hexadecimal
Symbols used in Hexadecimal (0–9, A–F)
Place value system in Base 16
Conversion of Hexadecimal to Decimal
Conversion of Decimal to Hexadecimal
Relationship between Binary and Hexadecimal
Importance of Hexadecimal in computers
This lecture is explained in simple and clear step-by-step method, making it ideal for:
Class 9 Computer Science students
Beginners in number systems
Students preparing for exams
Anyone who wants strong computer fundamentals
🎯 Learning Outcomes:
After watching this video, students will be able to:
Define Hexadecimal Number System
Identify its base and symbols
Perform Hexadecimal conversions
Understand why Hexadecimal is important in computing
Solve exam-based numerical questions confidently
Hexadecimal System explained | Class 9 Computer Science | Base 16 number system with conversions
📚 Subject Details:
Class: 9
Subject: Computer Science
Topic: Hexadecimal System
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