64 input adder

I want a adder with 64/32 inputs. i have to add 64/32 single bit parallelly and give a output in binary or decimal.please help me to find out such kind of IC.

hi,
You use a series chain of 4+4 bit adders and use the carry bit from a lower value adder to the next most sig adder.

Do a forum search for 'adders' there has been a detailed one recently.

Does this help.