5. A full subtractor can be built using two "Half Subtractor" devices and an OR gate. Design and test a full subtractor (schematic diagram and truth table shown below). Write the expressions of the difference and the borrow beside the circuit. L Input Output x y bi bi+1 d 0 0 0 0 0 0 0 1 1 1 0 1 0 1 0 1 1 1 0 |0 | 1 0 1 0 1100 1 1 1 1 Hand-In The full subtractor circuit using two "Half Subtractor" devices and an OR gate o Boolean functions for Difference and Borrow