Question

What does minuend and subtrahend denotes in a subtractor?

(a) Their corresponding bits of input

(b) Its outputs

(c) Its inputs

(d) Borrow bits

I have been asked this question by my school teacher while I was bunking the class.

Question is from Half & Full Subtractor in section Arithmetic Circuits of Digital Circuits

Answer 1

Correct option is (c) Its inputs

To explain I would say: Minuend and subtrahend are the two bits of input of a subtractor. If A and B are the two inputs of a subtractor then A is called minuend and B as subtrahend.