1. Digital Logic

Combinational Circuits — Quiz

Test your understanding of combinational circuits with 5 practice questions.

Practice Questions

Question 1

Which combinational circuit is used to select one of $N$ data inputs and route it to a single output, based on the value of $n$ select lines, where $N = 2^n$?

Question 2

What is the primary function of a decoder in digital systems?

Question 3

A full adder circuit takes three inputs: two data bits ($A$, $B$) and a carry-in bit ($C_{in}$). It produces two outputs: Sum ($S$) and Carry-out ($C_{out}$). If the inputs are $A=1$, $B=1$, and $C_{in}=1$, what are the values of $S$ and $C_{out}$?

Question 4

Which of the following describes the function of an encoder?

Question 5

A 4-to-1 multiplexer has two select lines, $S_1$ and $S_0$. If the select lines are set to $S_1=1$ and $S_0=1$, which input line ($I_0, I_1, I_2, I_3$) will be connected to the output?