AND Gate, OR Gate

  • A and B on =on The current will flow in this circuit if and only if both switches are closed, that is, if both a and b are true.
  • A or B on =on In this case the current will flow if either a or b or both are true and the respective switches are closed.
  • More complicated statements give rise to more complex switching circuits.
  • 0001+0001=0010 if 1+1=0 and next column=1
  • eg. a and b on make one circuit off and next circuit on


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