Question

BCD subtraction using 10's complement : 45-89 ?​

Answer 1

Answer:

-44

Explanation:

10's complements:

9's complement of 89 = 99-89 = 10

10's complement of 89 = 10 + 1 = 11

45+11 = 56

Since there's no carry, answer will be the -ve valued 10's complement of the result we got,

i.e 10's complement of 56

9's complement of 56 = 99 - 56 = 43

10's complement of 56 = 43 + 1 = 44

=> -44

I hope you got it...