Implementation of Boolean function using NAND gates





Objective:

To implement the exclusive NOR gate using NAND gates ICs only.

Equipment
  •  Advanced digital trainer DEV-2766
  •  Logic gates ICs
  •  NAND gate 7400
  •  NOT gate 7404
  •  AND gate 7408
  •  Connecting wires
Introduction and explanation of XOR gates :

XOR gate; The XOR gate (sometimes EOR gate, or EXOR gate and pronounced as Exclusive OR gate) is a digital logic gate that implements an exclusive or; that is, a true output (1/HIGH) results if one, and only one, of the inputs to the gate is true. If both inputs are false (0/LOW) or both are true, a false output results. XOR represents the inequality function, i.e., the output is true if the inputs are not alike otherwise the output is false. A way to remember XOR is "one or the other but not both". XOR can also be viewed as addition modulo 2. As a result, XOR gates are used to implement binary addition in computers. A half adder consists of an XOR gate and an AND gate. Other uses include subtractors, comparators, and controlled inverters.




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