Thursday, February 24, 2022

Anna University EC2203 Digital Electronics Nov Dec 2021 Question Paper

Anna University Previous Years Question Paper

Question Paper Code : 80444

B.E./B.Tech. DEGREE EXAMINATIONS, NOVEMBER/DECEMBER 2021.

Third Semester

Electronics and Communication Engineering

EC 2203/EC 34/080290010/10144 EC 304 – DIGITAL ELECTRONICS

(Regulations 2008/2010)

(Common to PTEC 2203 — Digital Electronics for BE. (Part—Time)

Third Semester– Electronics and Communication Engineering–Regulations 2009)

Time : Three hours Maximum : 100 marks

Answer ALL questions.

PART A — (10 × 2 = 20 marks)

1. State Distributive Law.

2. What is Prime Implicant?

3. Draw full adder circuit using only NAND gates.

4. Distinguish between decoder and demultiplexer.

5. What is the advantage of using master–slave JK flipflops?

6. Design a 3-bit ring counter.

7. Define Memory cycle time and Memory address setup time.

8. Implement Half Adder using PLA.

9. Compare mealy and moore machine.

10. List the effects due to hazards in logic circuits.

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