9618 AS Level Computer Science | Unit 3 Lesson 10: Boolean Logic - Logic Gates and Truth Tables

In this lesson, we’ll dive into Boolean Logic, one of the fundamental building blocks of Computer Science. You’ll learn how computers make decisions using logic gates, and how to represent these decisions using truth tables.

By the end of this lesson, you’ll be able to simplify logical expressions, understand how gates combine to produce outputs, and apply Boolean logic to solve exam-style problems.

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🎥 Lesson Breakdown:
0:25 — Introduction to Boolean Logic
1:30 — What Is a Logic Gate?
2:40 — Truth Tables Explained
4:45 — The NOT, AND & OR Gates
6:20 — The NAND, NOR & XOR Gates
8:15 — Combining Logic Gates
9:00 — Building Truth Tables for Combined Conditions

🔹 Topics Covered:
✅ Understanding Boolean values (TRUE/FALSE, 1/0)
✅ Logic gates: NOT, AND, OR, NAND, NOR, XOR
✅ How to draw and interpret logic circuit diagrams
✅ Constructing and reading truth tables
✅ Simplifying Boolean expressions
✅ Applying logic gates in exam-style scenarios

📚 Perfect for:
✔️ iGCSE Computer Science students
✔️ Learners preparing for Paper 1 (Theory)
✔️ Teachers explaining logic and reasoning through clear, visual examples

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