B.TechSemester 32023-24Digital System DesignBEC302
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Digital System Design (BEC302) - AKTU Question Paper 2023-24

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 2023-24. 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:2023-24
University:AKTU / UPTU

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Questions Asked in 2023-24

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 . 2 x 7 = 1 4
  • a
    What is the purpose of binary arithmetic in digital logic design? 2
  • b
    Explain the concept of signed magnitude representation. 2
  • c
    Explain the operation of a multiplexer. 2
  • d
    How does a full adder differ from a half adder? 2
  • e
    What are the basic building blocks of sequential logic circuits? 2
  • f
    What is fan-out in logic families? 2
  • g
    What are the key specifications of a DAC? 2
Section BAttempt any three o f t h e f o l l o w i n g : 7 x 3 = 2 1
  • a
    Convert the following. Hexadecimal equivalent of the decimal number 256 Decimal equivalent of (123) 9 378.9310 to octal Convert A3BH and 2F3H into binary
  • b
    Design a full adder by constructing the truth table and simplify the output equations. 7
  • c
    Describe the operation of various flip-flops, including S-R, JK, D, and T flip-flops 7
  • d
    Draw a circuit diagram of a CMOS inverter. Draw its transfer characteristics and explain its operation
  • e
    Explain switched capacitor and give its applications 7
Section CAttempt any one p a r t o f t h e f o l l o w i n g : 7 x 1 = 7
  • a
    Use Karnaugh maps to simplify the Boolean function: F(A, B,C,D) = Σ(1, 2, 4, 6, 9, 10
  • b
    State and Prove Demorgan’s theorem. 7
  • a
    Implement a full adder using NAND gates. 7
  • b
    Design 2-bit magnitude comparator. 7
  • a
    Compare and contrast Mealy and Moore machines and discuss their applications in digital systems design
  • b
    Explain positive edge triggered D-flip-flop with the help of circuit diagram and waveforms
  • a
    Explain the characteristics and specifications of TTL NAND gates, including noise margin, propagation delay, fan-in, and fan-out
  • b
    Describe the concept of programmable logic devices (PLDs) and explain how they are used for logic implementation in digital systems
  • a
    Explain the principle of operation of an R2R ladder DAC. 7
  • b
    Describe the principle of operation of a successive approximation ADC. 7

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.

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