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Previous year question hub

Digital Circuits - Electronics & Communication Engineering Previous Year Questions

Practice Digital Circuits - Electronics & Communication Engineering previous year questions organised from real papers, with year-wise coverage and clear topic navigation.

22Papers
14Years
118Questions
1Topics

Digital Circuits question pattern

Every graph below is calculated only from this selection.

Questions by year

Year-wise coverage for Digital Circuits. Each bar uses a separate theme-derived color.

Difficulty distribution

How the classified questions are distributed by difficulty.

Medium 73 61.9%
Easy 41 34.7%
Hard 4 3.4%

Question type distribution

MCQ, numerical, multiple-select and other formats found in these papers.

MCQ 88 74.6%
Numerical Answer Type (NAT) 21 17.8%
MSQ 7 5.9%
Fill in the blanks 2 1.7%

Subject weightage

Top subjects by unique question coverage.

Electronics & Communication Engineering
118 Qs

Most asked topics

Top topics across the included previous year papers.

Digital Circuits
118 Qs

Subtopic coverage

Top subtopics inside this exact selection.

Combinational Logic and Boolean Minimization
63 Qs
Sequential Circuits
25 Qs
Computer Organization
11 Qs
Semiconductor Memories
8 Qs
Data Converters
6 Qs
Number Representations
5 Qs

Paper coverage

Question coverage for the most populated papers. Every active PYP paper remains listed below.

Electronics and Communication Engineering (EC) 2026
8 Qs
Electronics & Communication Engineering (EC) 2025
5 Qs
Electronics & Communication Engineering (EC) 2024
8 Qs
Electronics & Communication Engineering (EC) 2023
5 Qs
Electronics & Communication Engineering (EC) 2022
5 Qs
Electronics & Communication Engineering (EC) 2021
7 Qs
Electronics & Communication Engineering (EC) 2020
5 Qs
Electronics & Communication Engineering (EC) 2019
7 Qs
Electronics & Communication Engineering (EC) 2018
8 Qs
Electronics & Communication Engineering (EC) 2017
6 Qs
Electronics & Communication Engineering (EC) 2016 [Session 2]
6 Qs
Electronics & Communication Engineering (EC) 2016 [Session 3]
6 Qs
Electronics & Communication Engineering (EC) 2016 [Session 1]
4 Qs
Electronics & Communication Engineering (EC) 2014 [Session 1]
5 Qs
Electronics & Communication Engineering (EC) 2014 [Session 4]
5 Qs
Electronics & Communication Engineering (EC) 2014 [Session 2]
4 Qs
Electronics & Communication Engineering (EC) 2014 [Session 3]
4 Qs
Electronics & Communication Engineering (EC) 2013 [Session 2]
4 Qs
Electronics & Communication Engineering (EC) 2013 [Session 3]
4 Qs
Electronics & Communication Engineering (EC) 2013 [Session 4]
4 Qs
Electronics & Communication Engineering (EC) 2013 [Session 1]
3 Qs
Electronics & Communication Engineering (EC) 2012
5 Qs

Browse by subtopics

Open a focused page built from the same verified paper data.

Combinational Logic and Boolean Minimization

Explore previous-paper coverage, trends and focused practice for Combinational Logic and Boolean Minimization.

63 questions21 papers13 years

Sequential Circuits

Explore previous-paper coverage, trends and focused practice for Sequential Circuits.

25 questions16 papers13 years

Computer Organization

Explore previous-paper coverage, trends and focused practice for Computer Organization.

11 questions11 papers6 years

Semiconductor Memories

Explore previous-paper coverage, trends and focused practice for Semiconductor Memories.

8 questions8 papers5 years

Data Converters

Explore previous-paper coverage, trends and focused practice for Data Converters.

6 questions6 papers6 years

Number Representations

Explore previous-paper coverage, trends and focused practice for Number Representations.

5 questions4 papers4 years

Included previous year papers

Newest papers appear first. Sort by year, question coverage or name.

PaperYear / sessionQuestions in this viewOpen
Electronics and Communication Engineering (EC) 202620268View paper
Electronics & Communication Engineering (EC) 202520255View paper
Electronics & Communication Engineering (EC) 202420248View paper
Electronics & Communication Engineering (EC) 202320235View paper
Electronics & Communication Engineering (EC) 202220225View paper
Electronics & Communication Engineering (EC) 202120217View paper
Electronics & Communication Engineering (EC) 202020205View paper
Electronics & Communication Engineering (EC) 201920197View paper
Electronics & Communication Engineering (EC) 201820188View paper
Electronics & Communication Engineering (EC) 201720176View paper
Electronics & Communication Engineering (EC) 2016 [Session 1]20164View paper
Electronics & Communication Engineering (EC) 2016 [Session 2]20166View paper
Electronics & Communication Engineering (EC) 2016 [Session 3]20166View paper
Electronics & Communication Engineering (EC) 2014 [Session 1]20145View paper
Electronics & Communication Engineering (EC) 2014 [Session 2]20144View paper
Electronics & Communication Engineering (EC) 2014 [Session 3]20144View paper
Electronics & Communication Engineering (EC) 2014 [Session 4]20145View paper
Electronics & Communication Engineering (EC) 2013 [Session 1]20133View paper
Electronics & Communication Engineering (EC) 2013 [Session 2]20134View paper
Electronics & Communication Engineering (EC) 2013 [Session 3]20134View paper
Electronics & Communication Engineering (EC) 2013 [Session 4]20134View paper
Electronics & Communication Engineering (EC) 201220125View paper

Sample previous year questions

A varied preview from the papers represented in this selection, with every available option.

1
2012 · Electronics & Communication Engineering · Digital Circuits · Sequential Circuits
Electronics & Communication Engineering (EC) 2012
Consider the given circuit. In this circuit, the race around

Question diagram

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2
2013 · Electronics & Communication Engineering · Digital Circuits · Combinational Logic and Boolean Minimization
Electronics & Communication Engineering (EC) 2013 [Session 1]
A bulb in a staircase has two switches, one switch being at the ground floor and the other one at the first floor. The bulb can be turned ON and also can be turned OFF by any one of the switches irrespective of the state of the other switch. The logic of switching of the bulb resembles
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3
2013 · Electronics & Communication Engineering · Digital Circuits · Computer Organization
Electronics & Communication Engineering (EC) 2013 [Session 3]
For 8085 microprocessor, the following program is executed.
MVI A, 05H;
MVI B, 05H;
PTR: ADD B;
DCR B;
JNZ PTR;
ADI 03H;
HLT;
At the end of program, accumulator contains
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4
2014 · Electronics & Communication Engineering · Digital Circuits · Combinational Logic and Boolean Minimization
Electronics & Communication Engineering (EC) 2014 [Session 1]
In the following circuit employing pass transistor logic, all NMOS transistors are identical with a threshold voltage of 1 V. Ignoring the body-effect, the output voltages at P, Q and R are,

Question diagram

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