logic gates

• 7 Basic logic gates

  • AND
  • OR
  • NOT
  • XOR
  • NAND
  • NOR
  • XNOR
• AND gate


  Outputs true only when both inputs are true
• XOR gate


  Output is true if either but not both of the inputs are true (exclusive)
• OR gate


  If either one or both inputs are true (inclusive)
• NOT gate

  Logical inverter with only one input that reverses logic
• XNOR gate


  Combination of XOR gate followed by an inverter. Output is true if the inputs are the same and false if the inputs are different
• NOR gate


  Combination of OR gate followed by an inverter. Output is true if both inputs are false
• NAND gate


  Acts as an AND gate followed by a NOT gate
• OR gate timing diagram


  A timing diagram is a graph of the output of a logic gate with respect to the inputs of the gate