Question Paper: Analog & Digital Circuits Question Paper - May 2016 - Information Technology (Semester 3) - Mumbai University (MU)
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## Analog & Digital Circuits - May 2016

### MU Information Technology (Semester 3)

Total marks: --
Total time: --
INSTRUCTIONS
(1) Assume appropriate data and state your reasons
(2) Marks are given to the right of every question
(3) Draw neat diagrams wherever necessary

### Solve any Five

1(a) CE configuration is popular in amplifier circuits. Justify. 4 marks

1(b) Explain the working of zener diode as voltage regulator. 4 marks

1(c) State ideal and practical characteristics of Op-amp. 4 marks

1(d) Add (83)10 and (34)10 in BCD. 4 marks

1(e) Convert S-R flip-flop to D flip-flop. 4 marks

1(f) Explain parallel i/p, serial o/p shift register. 4 marks

2(a) Explain in brief different biasing circuits of BJT. 4 marks

2(b) Explain how Op-amp can be used as summing, scaling and averaging amplifier in inverting configuration. 4 marks

3(a) Design and implement one digit BCD adder using IC-7843. 4 marks

3(b) Implement the following logic function usnig 4:1 mux
f(A, B, C) = π M(0, 1, 3, 5, 7).
4 marks

3(c) Explain the working of LCD. 4 marks

4(a) Design a 2-bit comparator using minimum number of gates. 4 marks

4(b) Explain the working of Astable multivibrator using IC-555. 4 marks

5(a) Design a synchronous counter which goes through following states using JK flip-flop,
0 - 2 - 4 - 6 - 0
4 marks

5(b) With the help of nea diagram, explain the functioning of a 4-bit bidirectional shift register. 4 marks

### Write short notes on the following:

6(a) VHDL program format 4 marks

6(b) Universal gates. Implement EX-OR gate using NAND gate. 4 marks

6(c) Integrator using Op-amp. 4 marks

6(d) Current mirror circuit. 4 marks

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