Question

A digital system consists of _____  types of circuits.

(a) 2

(b) 3

(c) 4

(d) 5

This question was addressed to me by my college professor while I was bunking the class.

The query is from Procedure for the Design of Combinational Circuits topic in section Arithmetic Circuits of Digital Circuits

Answer 1

Right option is (a) 2

To explain: A digital system consists of two types of circuits and these are combinational and sequential logic circuit. Combinational circuits are the ones which do not depend on previous inputs while Sequential circuits depend on past inputs.