B.TechSemester 32024-25Digital ElectronicsBOE310
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Digital Electronics (BOE310) - AKTU Question Paper 2024-25

B.Tech · Semester 3 · Free PDF Download

This is the official AKTU Digital Electronics Previous Year Question Paper for B.Tech Semester 3, 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 3
Session:2024-25
University:AKTU / UPTU

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Questions Asked in 2024-25

Digital Electronics (BOE310) — extracted question text · 70 marks · 3 Hours

Section AAttempt all questions in brief. 2 x 07 = 14
  • a
    What are SOP and POS forms?
  • b
    Which logic gates are called universal gates?
  • c
    What is a magnitude comparator used for?
  • d
    What is the advantage of a synchronous counter over an asynchronous counter?
  • e
    What are essential hazards?
  • g
    Which logic family consumes the least power?
Section BAttempt any three of the following: 7 x 3 = 21
  • a
    Convert the following numbers to their respective bases: i) (47.625)₁₀ to binary ii) (101101.101)₂ to decimal iii) (3F9)₁₆ to decimal iv) (543)₈ to binary
  • b
    Discuss multiplexed display systems. How are they used in practical applications?
  • c
    Explain flip-flop conversion. How can a JK flip-flop be converted into a D flip- flop?
  • d
    What is race -free state assignment? Why is it necessary in asynchronous sequential circuits?
  • e
    What is Programmable Logic Arrays (PLA)? Explain their structure and working
Section CAttempt any one part of the following: 07 x 1 = 07
  • a
    Design an excess 3 to BCD code converter
  • b
    Discuss the Karnaugh map (K-map) method for Boolean function simplification. Simplify the following Boolean function using K-map and also draw the simplified logic circuit using basic gates
  • a
    Explain the working of a BCD adder. How does it differ from a binary adder?
  • b
    Describe half subtractor circuits with truth tables and circuit diagrams
  • a
    What are synchronous counters? Explain the design and working of a 4 -bit synchronous counter
  • b
    Explain Johnson counters with timing diagrams and applications
  • a
    What is the significance of state assignment? List the different techniques for state assignment
  • b
    Explain the differences between synchronous and asynchronous sequential circuits with examples
  • a
    Explain the structure and operation of a static RAM (SRAM) and dynamic 5 K2 RAM (DRAM)
  • b
    Describe the circuit implementation and working of TTL logic gates

Question text is extracted from the official AKTU question paper PDF above. Check the original PDF for equations, diagrams and complete wording. Extracted: 2026-08-23.

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