B.TechSemester 32025-26Digital System DesignBEC302

Digital System Design (BEC302) - AKTU Question Paper 2025-26

B.Tech · Semester 3 · Free PDF Download

This is the official AKTU Digital System Design Previous Year Question Paper for B.Tech Semester 3, academic session 2025-26. Published by Dr. A.P.J. Abdul Kalam Technical University (AKTU/UPTU), Lucknow. Free PDF download — no login required.

Course:B.Tech

Semester:Semester 3

Session:2025-26

University:AKTU / UPTU

Rate this paper

Questions Asked in 2025-26

Digital System Design (BEC302) — complete question paper · 70 marks · 3 Hours

Section AAttempt all q u e s t i o n s i n b r i e f . 02 x 7 = 14

a
Simplify the following expression using K-map
b
Determine the value of base x, If (193)x = (623)8 1 K 3
d
What is race around condition?
e
Differentiate between Moore M achine and Mealey Machine
f
What do you mean by noise margin?
g
Calculate the step size of a 10-bit ADC with 5 V reference

Section BAttempt any three o f t h e f o l l o w i n g : 07 x 3 = 21

a
Simplify the Boolean function. Also implement the minimized function using basic logic gates
b
Describe a circuit of 4-bit bi nary adder-subtractor with overflow detection
c
Design a 3-bit synchronous bina ry counter with neat sketch
d
Explain the basic circuit and operation of emitter coupled logic (ECL)
e
Assume the following values for the ADC clock frequency = 1 MHz; VT= 0.1 mV; DAC has F.S. output = 10.23 V and a 10-bit input. Deter mine the following values. i. The digital equivalent obtained for V ii. The conversion time. iii. The resolution of this converter

Section CAttempt any one p a r t o f t h e f o l l o w i n g : 07 x 1 = 07

a
Minimize the following us ing Quine-Mc Cluskey Method
b
What do you mean by universal logic gates. Implement all oth er logic gates using universal logic gates
a
What is magnitude comparator? Design a two-bit comparator ci rcuit using logic gates
b
Implement the following B oolean function using 4:1 MUX
a
Draw JK flip-flop and write t he characteristic table and cha racteristic equation for it. Explain how will you convert it into T flip-flop
b
With the help of neat sketch, explain the operation of 4-bit universal shift register
a
Describe the constructio n of totem pole TTL NOR gate
b
Design a 3-bit binary to Gra y code converter using PLA
a
An 8-bit ADC has a reference voltage of 5 V
a
Calculate the resolution
b
Determine the quantization error
c
Find the di gital output for an input of 2.6 V
b
What is the advantage of R/2R ladder DACs over those that us e binary weighted resistors? A 10-bit DAC has a step size of 10 mV. Determine the full-scale output voltage and the percentage resolution

Question text is extracted from the official AKTU question paper PDF above. Hindi translations are omitted — every question is printed in English in the original paper. Last verified: 2026-08-23.

Digital System Design — Other Year Papers

AKTU Digital System Design PYQs from other sessions

Digital System Design2022-23 Digital System Design2023-24 Digital System Design2021-22

More B.Tech Semester 3 (2025-26) Papers

Other subjects from same semester and session

Energy Science Engineering2025-26 Electronic Devices2025-26 Data Structure2025-26 Basic Signals Systems2025-26 Cyber Security2025-26 Universal Human Values And Professional Ethics2025-26 Technical Communication2025-26 Fluid Mechanics Fluid Machines2025-26

View all B.Tech Semester 3 2025-26 papers →

Syllabus & More PYQs

Paper solve karne se pehle unit-wise syllabus dekh lo

📘 Digital System Design — Unit-wise SyllabusBEC302 AKTU 2nd Year Syllabus AKTU 2nd Year PYQs — All Branches ECE 2nd Year Syllabus ELECTRONICS COMPUTER ENGG 2nd Year Syllabus