Analog & Digital Circuits - May 2015

Information Technology (Semester 3)

TOTAL MARKS: 80
TOTAL TIME: 3 HOURS (1) Question 1 is compulsory.
(2) Attempt any three from the remaining questions.
(3) Assume data if required.
(4) Figures to the right indicate full marks.

1 (a) Convert D Flip-Flop to T Flip-Flop. (4 marks)

1 (b) Draw the Truth Table and excitation Table for S-R Flip-Flop. (4 marks)

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

1 (d) Convert the following octal numbers to binary, decimal and hexadecimal numbers.
i) (6673)₈ ii) (7466)₈. (4 marks)

1 (e) Compare BJT with JFET. (4 marks)

2 (a) Draw the Truth Table for Full adder and realize using 3:8 Decoder. (10 marks)

2 (b) Explain the working of Astable Multivibrator using IC-555. (10 marks)

3 (a) Explain in brief different biasing circuits for BJT. (10 marks)

3 (b) Design a Modulo 5 ripple up counter and draw the waveform for the same. (10 marks)

4 (a) Realize the following expression using only on 8:1 MUX and few Logic gates.
F(A, B, C, D)= ∑m(0, 3, 6, 8, 11, 13, 15). (10 marks)

4 (b) Explain Differential amplifier and elaborate any one method to improve CMRR. (10 marks)

5 (a) Design a synchronous counter which goes through following states using J-K Flip-Flop.
0-2-4-6-0. (10 marks)

5 (b) Write a note on Shift Register. (10 marks)

Write short notes on the following:

6 (a) Universal Gates. (7 marks)

6 (b) 4-bit Binary to gray code converter. (7 marks)

6 (c) Inverting and Non-inverting operational amplifier. (7 marks)