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A1.2 Data representation and computer logicA1.2.3

Purpose and use of logic gates

Describe the purpose and use of logic gates

SL + HL≈ 40 minCommand term: DescribePremium

In this lesson

  • The purpose of logic gates and their role in binary computing
  • The Boolean operators AND, OR, NOT, NAND, NOR, XOR and XNOR
  • How logic gates are used in computer systems, such as adders, memory and control systems

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What's inside

  1. LearnWhat a logic gate is
  2. LabThe seven gates
  3. ReferenceGate summary
  4. CheckQuick check
  5. CheckMatch each gate to its rule
  6. CheckWhich gate fits?
  7. LearnLogic gates in computer systems
  8. LabA half adder
  9. ExamWorked exam answer
  10. ReviewMistakes examiners see
  11. Exam practiceExam-style questions

Ends with 5 exam-style questions worth 9 marks, with a self-marking markscheme.