What is the sum of each pair of binary integers? (assuming 8-bit register is used)

10101011 + 11110000

The sum will be 00011011.

Explanation:

In binary integers

0+0=0

0+1=1

1+0=1

1+1=10 1 is carry.

On adding 10101011 and 11110000 we will get 100011011 that is a 9 bit number but we are using a 8 bit register so it cannot store this number so MSB 1 will not be included as it is the carry. So the answer is 00011011.