what is an adder and subtractor ? Draw a full subtractor with the help of a two half subtractors. Design combinational circuit for full subtractor using NAND gates
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In digital circuits, an adder–subtractor is a circuit that is capable of adding or subtracting numbers. Below is a circuit that does adding or subtracting depending on a control signal. It is also possible to construct a circuit that performs both addition and subtraction at the same time.
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