Digital Logic Circuits 4 COMBINATIO Name Symbol Funct AND A X=A Xo B X=A OR A X X=A X X=A B X X=A IA Buffer A NAND A X X= B X X=( NOR A X=A B Xo XOR A X = A’B B Exclusive OR XNOR A X=( B Xo Exclusive NOR X = A’B or Equivalence Computer Organization