The binary subtraction of 0 – 0 = ?
(a) Difference = 0, borrow = 0
(b) Difference = 1, borrow = 0
(c) Difference = 1, borrow = 1
(d) Difference = 0, borrow = 1
I had been asked this question in an online interview.
Origin of the question is Controlled Inverter topic in section Arithmetic Circuits of Digital Circuits