Binary Subtractor

Written on April 24, 2015 – 10:30 pm | by Robin |

Binary substractor is a digital circuit that performs subtraction of unsigned binary numbers.
Subtraction of number, say B from another number, say A can be done by adding 2’s complement of B to A. The 2’s complement of B can be obtained by adding 1 to the least significant pair of bits of 1’s complement of B. Inverters can be used to implement 1’s complement.