Question

subtract 13(10) from 9(10) using 1's complement​

Answer 1

Answer:

The 10's complement is also used to find the subtraction of the decimal numbers. The 10's complement of a number is calculated by subtracting each digit by 9 and then adding 1 to the result. Simply, by adding 1 to its 9's complement we can get its 10's complement value.

Answer 2

Answer:

The difference is negative 0100 i.e. -4.

Explanation:

We need to perform the 1's complement subtraction of 9 - 13.

• For this, let us assume:

       A = 9

       B = 13

• Now, convert A and B to binary:

       A = 1001

       B = 1101

• Now, take 1's complement of B:

       B' = 0010

• Now, add A and B':

       1001 + 0010 = 1011

• Since, no carry bit is generated , we take 1's complement of the sum and the final answer is negative.
• Therefore, the difference is negative 0100 i.e. -4.