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The output of a full subtractor is same as ____________

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The output of a full subtractor is same as ____________

(a) Half adder

(b) Full adder

(c) Half subtractor

(d) Decoder

This question was posed to me in unit test.

My question is from Half & Full Subtractor topic in chapter Arithmetic Circuits of Digital Circuits

1 Answer

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Best answer
Correct choice is (b) Full adder

Easiest explanation: The sum and difference output of a full adder and a full subtractor are same. If A, B and C are the input of a full adder and a full subtractor then the output will be given by (A XOR B XOR C), respectively.

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