3. A half subtractor subtracts two bits, x and y producing their difference d. It also has an output b to specify if a 1 has been borrowed from the next higher position. The truth table is given below. Following the steps from the notes, produce the "Half Subtractor" device. Then, use the device and connect binary switches and binary probes to test the truth table. Write the boolean function for d and b beside the circuit. Input Output x y bd 10000 ||0 | 1 | 1 1 |1|0| 0|1 1100 Hand-In o The underlying circuit of the "Half Subtractor" device. (Circuit with labeled ports--Part 1 in the notes) Boolean functions for borrow (b) and difference (d) o The testing circuit of the "Half Subtractor" device (the box) with binary switches and binary probes connected to it 3. A half subtractor subtracts two bits, x and y producing their difference d. It also has an output b to specify if a 1 has been borrowed from the next higher position. The truth table is given below. Following the steps from the notes, produce the "Half Subtractor" device. Then, use the device and connect binary switches and binary probes to test the truth table. Write the boolean function for d and b beside the circuit. Input Output x y bd 10000 ||0 | 1 | 1 1 |1|0| 0|1 1100 Hand-In o The underlying circuit of the "Half Subtractor" device. (Circuit with labeled ports--Part 1 in the notes) Boolean functions for borrow (b) and difference (d) o The testing circuit of the "Half Subtractor" device (the box) with binary switches and binary probes connected to it