What is half substractor ? & Explain

What is half substractor ? & Explain..

Q):- What is half substractor ?
Ans:-   A half substractor is a combinational circuit that subtracts two bits and produces their differences .

Truth table of half substractor.
This circuit has two inputs and two outputs.
Let us consider A & B are inputs and difference & Borrow are outputs.

Expression of half substractor.

Realisation of half substractor.

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