Computer Science

Binary Subtraction

Perform subtraction of binary numbers.

Use 2’s complement or borrow method

Formula Explanation

Common methods are borrow method or addition of 2’s complement.

Variables Explained

2’s complement = 1’s complement + 1.

Solved Example

Subtract 0101 from 1011.
1011 - 0101 = 0110.

Exam Tip

Check by converting to decimal.