Perform following operation and determine the 8-bit 2’s compliment on the result of following signed addition: 0001 0000 + 1110 1001

Answer 1

0001 0000b + 1110 1001b

-> 0001 0000b - (~1110 1001b + 1)

-> 0001 0000b - (0001 0111b)

-> 32 - 39

0001 0000b + 1110 1001b = 1111 1001b

-> -(~1111 1001b + 1)

-> -0000 0111b

-> -7