Ch 3.2 Logic Gates and Logic Circuits (FULL) | Ch 3 Hardware | AS Level CS | 9618 Paper 1

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Learn Logic Gates and Logic Circuits from Cambridge International AS Level Computer Science (9618, Paper 1).
This video covers gate symbols, definitions, truth tables, logic expressions, and circuit construction — exactly the way they appear in Paper 1.

📌 What you’ll learn in this lesson:

✅ Logic Gate Symbols & Functions

NOT

AND

OR

NAND

NOR

XOR (EOR)
(All gates except NOT have two inputs.)

✅ Truth Tables

Constructing truth tables for each gate

Using inputs to determine output

✅ Logic Circuits
How to build circuits from:

A problem statement

A logic expression

A truth table

✅ Truth Tables from Circuits & Expressions

Convert logic circuits into truth tables

Derive truth tables from expressions and scenarios

✅ Logic Expressions
How to write expressions from:

A problem statement

A logic circuit

A truth table

✨ Perfect for AS students preparing for 9618 Paper 1, or anyone revising digital logic with clear, exam-style explanations and worked examples.