binary addition.

The addition of two binary numbers is performed in exactly the same manner as the addition of decimal numbers. In fact, binary addition is simpler, because we have only two digits(0 & 1). When adding binary numbers, the following rules apply

           0+0=1

           1+0=1

           1+1=10=0+ carry of 1 into next position

           1+1+1=11=1+ carry of 1 into next position