Digital Electronics Unit 2 Notes AKTU (BOE310)

AKTU · BTECH · Semester 3, 4 · Digital Electronics · Unit 2 · Notes

AKTU Digital Electronics (BOE310) Unit 2 notes for B.Tech Semester 3/4 – Combinational Logic. Topics: Adders and Subtractors, Multiplexer and Demultiplexer…

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Unit 2: Combinational Logic – AKTU syllabus topics

  • Adders and Subtractors: Half and Full Adder, Serial and Parallel Adders, BCD Adder
  • Multiplexer and Demultiplexer: Multiplexer Implementation, Demultiplexer Circuit
  • Encoders and Decoders: Encoder Types and Design, Decoder Types and Design
  • Magnitude Comparator
  • Multiplexed Display

Most asked AKTU PYQ questions from Unit 2

  1. Q2b. (i) Implement a full subtractor circuit using only NAND gates. (ii) Using 4:1 multiplexers, implement the following function F(A, B, C) = ∑m(0,2,3,5,7) (10 marks, 2021-22)
  2. Q4b. Design a full adder and full subtractor using NAND gates only. (10 marks, 2021-22)
  3. Q1c. What do you mean by a combinational circuit? (2 marks, 2023-24)
  4. Q1d. What is meant by a half adder? (2 marks, 2023-24)
  5. Q1c. Implement a 4:1 multiplexer using 2:1 multiplexer. (2 marks, 2021-22)
  6. Q4b. Implement the Boolean function F(A,B,C,D) = ∑m(0,1,2,5,8,13,14) using 8:1 MUX with A,C,D as selection lines. (10 marks, 2022-23)
  7. Q2b. Design 4:1 multiplexer using gates. (10 marks, 2022-23)
  8. Q4a. Design a 4-bit adder circuit using gates. (10 marks, 2022-23)
  9. Q4b. Design a 3:8 Decoder circuit using gates. (10 marks, 2022-23)
  10. Q2b. Construct a full adder and implement the full adder with the help of half adders. Also implement the full adder with NAND gates only. (10 marks, 2022-23)

AKTU paper codes: BOE310, BOE410, BOE310H, BOE410H, KOE039, BEE401, KEE401, KOE049

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