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Computer Science GCES EDEXCEL

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  1. Decomposition And Abstraction Edexcel
    2 主题
  2. Algorithms Edexcel
    11 主题
  3. Truth Tables Edexcel
    3 主题
  4. Binary Edexcel
    6 主题
  5. Data Representation Edexcel
    4 主题
  6. Data Storage And Compression Edexcel
    2 主题
  7. Hardware Edexcel
    5 主题
  8. Software Edexcel
    3 主题
  9. Programming Languages Edexcel
    2 主题
  10. Networks Edexcel
    7 主题
  11. Network Security Edexcel
    2 主题
  12. Environmental Issues Edexcel
    1 主题
  13. Ethical And Legal Issues Edexcel
    3 主题
  14. Cybersecurity Edexcel
    2 主题
  15. Develop Code Edexcel
    6 主题
  16. Constructs Edexcel
    4 主题
  17. Data Types And Data Structures Edexcel
    5 主题
  18. Operators Edexcel
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  19. Subprograms Edexcel
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Exam code:1CP2

Combining Boolean Operators

  • Boolean operators can be combined to produce more complex expressions

  • The combination of two or more Boolean operators forms a logic expression

  • Brackets are used to clarify the order of operations

  • A logic diagram is a visual representation of combinations of Boolean operators within a logic circuit

  • An example would be Q = NOT(A OR B)

logic circuit1
  • In the diagram above, the inputs are represented by A and B

  • P is the output of the OR gate on the left and becomes the input of the NOT gate

  • Q is the final output of the logic circuit

  • This is a logic diagram for the Boolean expression Q = NOT(A OR B)

Examiner Tips and Tricks

You may be asked to draw a logic circuit from a logic statement or a Boolean expression OR write the logical expression that is expressed in the logic diagram

Logic circuits will be limited to a maximum of three inputs and one output

Example of combining Boolean operators

10-boolean-logic
  • P = (A OR B) AND NOT C

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