iGCSE Computer Science

Introduction
Past Papers
- Set of 2019
- Set of 2021
Pre-Exam Notes
- Paper 1
- Paper 2
Data Representation
Data Transmission
Hardware
Software
- 4.1 Types of Software & Interrupts
- 4.2 Types of Programming Languages, Translators & IDEs
The Internet & Its Uses
Automated & Emerging Technologies
Databases (P2)
- 9.1 Databases
Boolean Logic (P2)
- 10.1 Logic Gates
Miscellaneous (P2)

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Gates & Truth Tables
Exam Questions

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Boolean Logic (P2)

10.1 Logic Gates

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Gates & Truth Tables

Exam Questions

NOT Gate 0 = 1 1 = 0

XOR Gate 0 . 0 = 0 1 . 0 = 1 1 . 1 = 0

AND Gate 0 . 0 = 0 1 . 0 = 0 1 . 1 = 1

NAND Gate 0 . 0 = 1 1 . 0 = 1 1 . 1 = 0

OR Gate 0 . 0 = 0 1 . 0 = 1 1 . 1 = 1

NOR Gate 0 . 0 = 1 1 . 0 = 0 1 . 1 = 0