XNOR

The connective in logic corresponding to the exclusive nor operation.  XNOR  is equivalent to , where  denotes AND,  denotes OR, and  denotes NOT. The circuit diagram symbol for an XNOR gate is illustrated above, and the XNOR truth table is given below for two arguments. For two arguments, " XNOR " is identical to " iff " and " is equivalent to " ().

		XNOR
T	T	T
T	F	F
F	T	F
F	F	T

REFERENCES:

Simpson, R. E. "The Exclusive NOR (XNOR) Gate." §12.5.7 in Introductory Electronics for Scientists and Engineers, 2nd ed. Boston, MA: Allyn and Bacon, pp. 539 and 554, 1987.