uniti arithmetic gates:exor,exnor ex-or ex-nor gates are called as arithmetic gates becausethese two gates are special cases of or nor gates ex-or gate the full form of ex-or gate is exclusive-or gate if both the inputs are or both the inputs are ,then obtained output is and for the remaining cases the output is taken as below figure shows the symbol of ex-or gatewhich is having two inputs ab and one outputy the following table shows the truth table of -input ex-or gate ab ex-northe full form of ex-nor gate is exclusive-nor gate it is inversion of ex-or the following figure shows the symbol of ex-nor gatewhich is having two inputs ab and one outputy department of csevishnu institute of technology