3.1.7

Logic Circuits

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Logic Circuits

Multiple transistors can be arranged together to make logic gates and logic circuits.

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Logic gates

  • Multiple transistors can be arranged together to form more complex "switches" that only allow electricity to flow through if all or some of the transistors are "on".
  • These arrangements are called logic gates.
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Examples of logic gates

  • The AND gate performs the boolean AND function:
    • It will only output true if both of its inputs are true.
  • The OR gate performs the boolean OR function:
    • It will output true if either or both of its inputs are true.
  • The NOT gate performs the boolean NOT function:
    • It takes one input and inverts it.
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Logic circuits

  • Logic gates can be combined to create complex logic circuits.
  • These logic circuits can perform functions such as adding numbers and storing data.

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