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Boolean Logic

Candidates should be able to:

1. Identify and use the standard symbols for logic gates

Note and guidance
  • Logic gates symbols

2. Define and understand the functions of the logic gates

Note and guidance
  • Including:

    • NOT

    • AND

    • OR

    • NAND

    • NOR

    • XOR (EOR)

  • the binary output produced from all the possible binary inputs

  • NOT is a single input gate

  • All other gates are limited to two inputs

3. - Use logic gates to create given logic circuits from a:

  • problem statement

  • logic expression

  • truth table

  • Complete a truth table from a:

  • problem statement

  • logic expression

  • logic circuit

  • Write a logic expression from a:

  • problem statement

  • logic circuit

  • truth table

A

B

C

Output

0

0

0

0

0

0

1

1

0

1

0

0

0

1

1

1

1

0

0

0

1

0

1

1

1

1

0

0

1

1

1

1

Note and guidance
  • Circuits must be drawn for the statement given, without simplification

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

  • An example truth table with three inputs, for completion:

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