Perform the following calculation assuming that the values a

Perform the following calculation assuming that the values are 8-bit decimal integers stored in
two\'s complement format

10101001 - 01101111

Solution

let A=10101001

B=01101111

first we take 2\'s complement of A and B

01010110-1\'s complement form of A

add 1 to 1\'s complement of A

01010111-2\'s complement of A

10010000-1\'s complement of B

add 1 to 1\'s complement of B

10010001-2\'s complement of B

add 2\'s complement of A and B

01010111

+ 10010001

= 11101000

answer is 10101001 - 01101111= 11101000