Binary numbers subtraction using the complement methods – Steps

STEPS FOR BINARY SUBTRACTION USING 1’s and 2’s Complement Method

1. Make equal no of bits in both minuend and subtrahend
2. Calculate
   • 1’s Complement of subtrahend if you’re performing subtracting using 1’s complement method.
   • 2’s complement of the subtrahend if you’re performing subtraction using 2’s complement method
     (Also view how to calculate 1’s and 2’s complements here.)
3. Add result of step 2 with minuend to calculate the last sum.
4. Inspect the last sum for carrying or overflow bit with the following conditions to calculate answer.

Example for further understanding.