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25-Comp-A2 Digital Systems Design: Undated paper

Nivaar worked solution (AI-drafted; not reviewed by a licensed engineer)

  1. Question 1 Digital Design and VHDL Concepts
  2. Question 2 Function Realization with an 8-to-1 Multiplexer
  3. Question 3 Boolean-Algebra Minimization from a Product-of-Sums Expression
  4. Question 4 3-Bit Synchronous Counter with Count-Enable
  5. Question 5 64Kbyte Memory Address Decoding
  6. Question 6 Interrupt Processing

Start with Question 1 →

17-Comp-A2, Digital Systems Design — National Exams, May 2019. Closed-book, 3 hours; six 20-mark questions, FIVE constitute a complete exam (all six answered below as a complete study resource).

Reference texts: Mano & Ciletti, Digital Design, 6th ed. — VHDL concepts, multiplexer-based realization, Boolean-algebra/K-map minimization, synchronous counter design, and memory/interfacing, covering Questions 1–5; Patterson & Hennessy, Computer Organization and Design, 6th ed. — interrupt-driven I/O, covering Question 6.

Check: Question 1.2's operator is ambiguous between "xnor-operator" and "two-input xor operator"; only the XOR reading is consistent with the three answer choices offered (a same/differ/either-true triad, which only makes sense as an XOR truth-table question), so the XOR reading is adopted.