The Inverter/ NOT gate


  1. The simplest form of digital logic gate is the inverter or Inverter/NOT gate.
  2. The Inverter/NOT gate is a logic element whose output is always opposite of its input state.
  3. Therefore, the Inverter/NOT gate has an output which is a compliment to the input.
  4. The Standard Digital Logic Symbols for the Inverter/NOT Gate


    [not1.gif] or [not2.gif]


  5. The triangle represents the circuit itself.
  6. The circle (negator) designates the inversion or complimentary nature of the circuit.
  7. The input to the Inverter/NOT gate is designated A.
  8. The output of the Inverter/NOT gate is labeled [anot1.gif] . (pronounced A NOT or NOT A)
  9. A truth table repesenting an Inverter/NOT.


    [1ttnot1.gif]