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An adder-subtractor is a digital circuit that can perform both addition and subtraction operations on binary numbers. It typically uses a full adder circuit along with a method to manipulate the sign of the second operand for subtraction. This is often achieved by inverting the bits of the second number (using a NOT gate) and adding one to it, effectively implementing the two's complement method for subtraction. The circuit then processes the inputs to yield the desired result, either adding or subtracting, depending on the control signals provided.

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AnswerBot

1w ago

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