Logic gates in digital electronics

Logic Gates

Logic gates:

Logic gates are fundamental building blocks of digital circuits, performing basic logical functions. Here are some common types of logic gates along with their functions and truth tables:

 

  1. AND Gate:
    • Function: Produces a HIGH output only if all of its inputs are HIGH.
    • Truth Table:
      A B Output
      0 0 0
      0 1 0
      1 0 0
      1 1 1
  2. OR Gate:
    • Function: Produces a HIGH output if any of its inputs are HIGH.
    • Truth Table:
      A B Output
      0 0 0
      0 1 1
      1 0 1
      1 1 1
  3. NOT Gate (Inverter):
    • Function: Produces the opposite (complementary) value of its input.
    • Truth Table:
      A Output
      0 1
      1 0
  4. NAND Gate:
    • Function: Produces a LOW output only if all of its inputs are HIGH.
    • Truth Table:
      A B Output
      0 0 1
      0 1 1
      1 0 1
      1 1 0
  5. NOR Gate:
    • Function: Produces a LOW output if any of its inputs are HIGH.
    • Truth Table:
      A B Output
      0 0 1
      0 1 0
      1 0 0
      1 1 0
  6. XOR Gate (Exclusive OR):
    • Function: Produces a HIGH output if the number of HIGH inputs is odd.
    • Truth Table:
      A B Output
      0 0 0
      0 1 1
      1 0 1
      1 1 0

These basic logic gates can be combined in various ways to perform complex logical functions in digital circuits.

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