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EndsemDec 20252019 patternSE E&TC

Digital Circuits SPPU Endsem Question Paper Dec 2025

This 2019-pattern Digital Circuits paper is listed under Digital Electronics. All 8 questions are below, as printed.

Open the PDF
Subject code
204182
Pattern
2019 pattern
Exam
Endsem
Session
Dec 2025
Max. marks
70
Time
2½ Hours
Semester
III
Paper code
[6582]-27

Printed for: S.E. (Electronics/E & TC) (Electronics & Computer

Instructions to the candidates

  1. Solve Q1 or Q2, Q3 or Q4, Q5 or Q6, Q7 or Q8.
  2. Neat diagrams must be drawn wherever necessary.
  3. Figures to the right indicate full marks.

Questions

  1. Q1

    1. a)

      Design of one-bit magnitude comparator.

      Also asked:May 2025 ·May 2024

      [6]
    2. b)

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

      [6]
    3. c)

      Write a short note on Look ahead carry generator.

      Also asked:May 2025

      [6]

  2. Q2

    1. a)

      Design of 3 bit even parity generator.

      [6]
    2. b)

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

      [6]
    3. c)

      Write a short note on ALU.

      [6]

  3. Q3

    1. a)

      Define the following terms as applied to flip-flop. i) Set up time ii) Hold time iii) Propagation Delays

      [6]
    2. b)

      Perform the JK flip-flop to D flip-flop conversion.

      [6]
    3. c)

      Design and implement a MOD 6 asynchronous counter IC 7490. 2

      [5]

  4. Q4

    1. a)

      Design a sequence generator to generate sequence 11001 using shift register.

      [6]
    2. b)

      Design and implement a MOD 4 synchronous counter using D flipflop.

      [6]
    3. c)

      Explain the various modes of shift Register.

      [5]

  5. Q5

    1. a)

      Design sequence detector to detect a sequence 101... using D flip-flops. Use mealy machine.

      [9]
    2. b)

      Draw an ASM chart for a 2-bit binary counter having enable line E such that E=1 (counting enabled) and E = 0 (hold present count).

      [8]

  6. Q6

    1. a)

      Design sequence detector to detect a sequence 110... using T flip-flops. Use mealy machine.

      [9]
    2. b)

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

      [8]

  7. Q7

    1. a)

      Compare between PROM, PAL, PLA

      [6]
    2. b)

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

      [6]
    3. c)

      Draw and explain the architecture of CPLD.

      [6]

  8. Q8

    1. a)

      Draw a neat diagram of one cell of staticRAM and explain its working.

      [6]
    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]