B.TechSemester 42024-25Digital ElectronicsBEE401

Digital Electronics (BEE401) - AKTU Question Paper 2024-25

B.Tech · Semester 4 · Free PDF Download

This is the official AKTU Digital Electronics Previous Year Question Paper for B.Tech Semester 4, academic session 2024-25. Published by Dr. A.P.J. Abdul Kalam Technical University (AKTU/UPTU), Lucknow. Free PDF download — no login required.

Course:B.Tech

Semester:Semester 4

Session:2024-25

University:AKTU / UPTU

Rate this paper

Questions Asked in 2024-25

Digital Electronics (BEE401) — complete question paper · 70 marks · 3 Hours

Section AAttempt all questions in brief. 02 x 7 = 14

a
Convert the following binary number into grey code
1
ሺ110111ሻଶ 2. ሺ100110ሻଶ
b
Perform the subtract ion using 2’s complement method of the following
c
Implement a 4:1 multiplexer using 2:1 multiplexer
d
Elucidate the race around condi tion in sequential circuit. 3 K 2
e
Discuss the R-S flip flop in detail
f
Enlist the advantages of EEPROM
g
Explain the flash type ADC

Section BAttempt any three of the following: 07 x 3 = 21

a
Simplify the Boolean expression using K-map
b
Design a full adder using a ROM
c
Define bi-directional shift re gister. Draw and explain 3-bit bi-directional shift register using D flip-flop
d
Elaborate a comparison of CMO S, TTL and RTL logic families
e
Explain the working of dual slope ADC with neat diagram. 5 K 2

Section CAttempt any one part of the following: 07 x 1 = 07

a
Simplify and minimize the following four variable switching function using Quine-Mc McCluskey tabulation method
b
Implement the Boolean expression using only NAND gate
a
Explain the look ahead carry g enerator with neat diagram
b
Implement the following function. F (A, B, C, D) = ∑m (0, 1, 3, 4, 7, 8, 9, 11, 14, 15) using
a
Design a synchronous binary MOD-6 counter
b
Explain Melay machine and Moore machine. Also state the diff erences between Melay and Moore machine
a
Draw the circuit of an ECL gate and explain its operation. 4 K 2
b
Elaborate the term PAL, PLA a nd FPGA with neat diagram. 4 K 2
a
What do you mean by R-2R ladder DAC? Explain working operati on od R-2R Ladder DAC
b
Enlist the different types of ADC. Alsoexplain operation of successive approximation type ADC

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.