Given two 4 -bit inputs x and. y, draw a circuit that output the value z such that z=x+x+y. As a special property of this circuit only, we do not want overflow, so we have decided that z may have more than 4 bits to represent its value. Draw the corresponding circuit; label the output bits of z and state the number of bits needed in the output. Hint: is there a fast way to calculate x+x without using many gates