Question

What is the non return to zero format?

(a) the bits are either high or low and have no gaps between them

(b) the bits are either high or low and have gaps between them

(c) the bits are high and have gaps between them

(d) the bits are low and have no gaps between them

This question was addressed to me in an international level competition.

My question comes from Asynchronous Serial Communication in section MSP430 Microcontroller of Microcontroller

Answer 1

The correct choice is (a) the bits are either high or low and have no gaps between them

For explanation I would say: Non-return to zero format represents a format in which the bits are either high or low and have no gaps between them.