Digital Electronics Unit 4 – Synchronous and Asynchronous Sequential Circuits: important questions for AKTU
Unit 4 (Synchronous and Asynchronous Sequential Circuits) questions that AKTU repeats most often. This unit carries about 27 marks per paper. Start with the repeated questions, then the most asked topics.
Most repeated Unit 4 questions
- Explain State Reduction and assignment with suitable example. (10 marks, 2023, Synchronous Circuit Analysis) – also asked in 2022, 2023, 2025, 2026
- Design a synchronous 3-bit FSM (which can be used for counting) using D flip-flops with no external inputs and count sequence as follows: 0-1-3-7-4-2-0. (10 marks, 2023, Synchronous Circuit Design Procedure) – also asked in 2022, 2025, 2026
- Illustrate the working and applications of Asynchronous sequential circuits. (10 marks, 2023, Asynchronous Circuit Analysis) – also asked in 2022, 2025, 2026
Most important Unit 4 topic
- Synchronous Circuit Analysis (Unit 4: Synchronous and Asynchronous Sequential Circuits) – asked 15 times in 2022, 2023, 2025, 2026
Most asked Unit 4 topics
- Synchronous Circuit Analysis – asked 15 times
- Synchronous Circuit Design Procedure – asked 9 times
- Asynchronous Circuit Analysis – asked 8 times
More Unit 4 previous year questions
- What is a hazard in digital circuits? (2 marks, 2026, Hazards in Digital Circuits)
- Explain the steps involved in state assignment of synchronous sequential circuits. (7 marks, 2026, Synchronous Circuit Analysis)
- Explain race conditions in asynchronous sequential circuits. (7 marks, 2026, Asynchronous Circuit Design)
- Explain the complete design procedure of a synchronous sequence detector using state diagram and state table. (7 marks, 2026, Synchronous Circuit Design Procedure)
- What are essential hazards? (2 marks, 2025, Hazards in Digital Circuits)
Unit 4 syllabus topics
- Synchronous Circuit Analysis
- Synchronous Circuit Design Procedure
- Asynchronous Circuit Analysis
- Asynchronous Circuit Design
- Hazards in Digital Circuits