Question

Asynchronous serial communication usually requires two wires for each direction plus a common ground.

(a) true

(b) false

(c) cant be said

(d) depends on the conditions

This question was posed to me in an interview for job.

My question is taken from Asynchronous Serial Communication in section MSP430 Microcontroller of Microcontroller

Answer 1

Right choice is (b) false

To explain: Asynchronous serial communication usually requires only a single wire for each direction plus a common ground.