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EndsemMay 20252019 patternSE IT

Digital Electronics and Logic Design (DELD) SPPU Endsem Question Paper May 2025

All 8 questions from this SPPU endsem paper, as printed. Read them here or open the PDF.

Open the PDFMost repeated DELD questions
Subject code
210245
Pattern
2019 pattern
Exam
Endsem
Session
May 2025
Max. marks
70
Time
2½ Hours
Semester
III
Paper code
[6402]-39

Printed for: S.E. (Computer Engineering)

Instructions to the candidates

  1. Attempt Q.1 or Q.2, Q.3 or Q.4, Q.5 or Q.6 & Q.7 or Q.8.
  2. Figures to the right side indicate full marks.
  3. Neat diagrams must be drawn wherever necessary.

Questions

  1. Q1

    1. a)

      Compare asynchronous counter & synchronous counter.

      [6]
    2. b)

      Explain how J-K Flip-Flop is converted into i) TFF ii) DFF

      [6]
    3. c)

      Draw & Explain 4 bit ripple up counter.

      [6]

  2. Q2

    1. a)

      State the different types of shift Registers & state its any two applications.

      Also asked:Dec 2025

      [6]
    2. b)

      Write a short note on Johnson counter.

      [6]
    3. c)

      What is Mod counter? Design Mod-9 using IC7490.

      [6]

  3. Q3

    1. a)

      Draw a block diagram of PLA device & Explain.

      Also asked:May 2024

      [6]
    2. b)

      This part has equations that don’t show as text. Open the PDF to read it.

      [6]
    3. c)

      What is difference between PLA & PAL.

      Also asked:Dec 2025

      [5]

  4. Q4

    1. a)

      What is ASM chart? State & Explain basic component of ASM chart.

      Also asked:May 2024

      [5]
    2. b)

      This part has equations that don’t show as text. Open the PDF to read it.

      [6]
    3. c)

      This part has equations that don’t show as text. Open the PDF to read it.

      [6]

  5. Q5

    1. a)

      What is logic family? Give the classification of logic family & also write important characteristics of CMOS.

      [6]
    2. b)

      Draw & Explain the circuit diagram of CMOS inverter.

      Also asked:Dec 2025

      [6]
    3. c)

      Define the following terms & mention the standard value of TTL logic family. i) Fan out ii) Power desipeation iii) Noise Immunity

      [6]

  6. Q6

    1. a)

      Compare TTL & CMOS logic family.

      Also asked:May 2024

      [6]
    2. b)

      Explain CMOS NAND Gate with neat diagram.

      Also asked:May 2024

      [6]
    3. c)

      What are the advantages of open collector output? Justify your answer with suitable circuit.

      [6]

  7. Q7

    1. a)

      What is microprocessor & list different applications of microprocessor.

      Also asked:Dec 2025 ·May 2024

      [6]
    2. b)

      Explain the memory organization of microprocessor.

      Also asked:Dec 2025 ·May 2024

      [6]
    3. c)

      What are the different types of bases used in microprocessor & Explain it.

      Also asked:May 2024

      [5]

  8. Q8

    1. a)

      What are the various functional units of microprocessor? Explain ALU in brief.

      [6]
    2. b)

      Draw & Explain block diagram of microprocessor.

      [6]
    3. c)

      Explain 4-bit multiplier circuit using ALU & shift registers. ♦♦♦

      Also asked:Dec 2025

      [5]