Experiment No.: 4(B)
Realization of Half Subtractor, Full Subtractor
Objective: To implement the circuit and verify the circuit with truth table of
- Half subtractor
- Full subtractor
Half subtractor: The half subtractor is also a building block for subtracting two binary numbers. It has two inputs and two outputs. This circuit is used to subtract two single bit binary numbers A and B. The ‘difference’ (D) and ‘borrow’ (B) are two output states of the half subtractor.
Truth Table of half subtractor:
The SOP form of the Diff and Borrow is as follows:
Borrow = A’B
Circuit Diagram of Half Subtractor using Logic Gates:
Full Subtractor: A full subtractor is a combinational circuit that performs the arithmetic subtraction of three binary digit. It has 3 input and 2 output i.e. Difference (D) and Borrow (B).
Truth table of Full Subtractor:
Circuit Diagram of Full Subtractor using Logic Gates:
|Sl No.||Name of Apparatus||Quantity||Specification||Makers name|
|1.||Logic Gate Trainer Kit||1||IC 7432, IC 7408, IC 7404, IC 7400, IC 7402, IC 7404||Salicon|
|2.||Connecting Probes||As required|
|3.||Digital Multimeter||1||0-1000 V DC, 0-750 V AC, 0-10 A||Akademika|
Remarks: The half adder and full subtractor circuits are implemented and verified the truth table.