BSc IT Sem I 2019 20 2019-20 DIGITAL ELECTRONICS Question Paper - Mumbai University | munotes

Questions asked in this paper

1. Q2 All Questions are compulsory
2. Q3 Right side indicates marks
3. Q1 Answer any 3 from following. Convert the following numbers 15 marks
4. Q2 i) Perform the addition of following Binary number
   • ii) Perform the addition of following Binary number
5. Q3 Solve:
6. Q4 Convert: ii)
7. Q5 Write a short note on Number system
8. Q6 What are codes? Where are they used? Differentiate between weighted and non weighted codes. Give one example of each
9. Q2 Answer any 3 from following. 15 marks
10. Q1 Prove the following
11. Q3 State and proof DeMorgans Law
12. Q4 Describe how NAND gate is used to build NOT,OR and AND gates
13. Q5 Describe the AND gate and XOR gate with the symbol, the logical statement, Boolean Expression and truth table
14. Q6 Simplify the expression and draw the circuit diagram
15. Q3 Answer any 3 from following. Design Half Adder using K-map. Draw the circuit diagram & truth table for same 15 marks
16. Q2 What is comparator? Explain
17. Q3 Describe the working of Multiplier 4, Describe the working of 2-bit half subtractor 5, Explain with an example code conversion from binary to gray
18. Q6 Describe the working of BCD subtractor
19. Q4 Answer any 3 from following. Draw the logic diagram of 4 to Imultiplexer. Explain its working 2 What is meant by race around condition? Explain master slave flip flop 15 marks
20. Q3 Describe with a truth table the working of clocked RS flip flop
21. Q4 Differentiate between Encoder and Decoders,
22. Q5 Describe with a truth table the working of D flip flop
23. Q6 Differentiate between Multiplexer and Demultiplexer
24. Q5 Answer any 3 from following. - Explain the working of four bit Ring counter, 15 marks
25. Q2 Write a short note on shift register
26. Q3 Describe the functioning of presettable counter,
27. Q4 Describe the working of Johnson counter,
28. Q5 Explain the difference between serial shifting and parallel shifting of data in shift
29. Q6 Explain the operation of SIPO shift register,

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