Analog & Digital Circuits - May 2014

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) Explain the working of Zener diode as Voltage regulator.(4 marks) 1 (b) Give the comparison between LED and LCD.(4 marks) 1 (c) Why Transistor biasing is required? And state the factors to be considered in designing a biasing circuit.(4 marks) 1 (d) Convert the following decimal numbers to Binary, octal and Hexadecimal number
(i) (555)₁₀ (ii) (7905)₁₀(4 marks) 1 (e) Compare Combinational Logic with Sequential Logic.(4 marks) 2 (a) Design and Implement one digit BCD adder using IC-7843(10 marks) 2 (b) Explain the working of Monostable Multivibrator using IC-555(10 marks) 3 (a) Explain any four Linear applications of operational Amplifier(12 marks) 3 (b) Design a Module-9 up counter using 4-bit ripple counter.(8 marks) 4 (a) Implement the following expression, using only one 4:1 MUX and few Logic gates
F(A,B,C,D) = ΠM (0, 1, 2, 3, 6, 8, 11, 13, 15)(10 marks) 4 (b) Explain Differential Amplifier and explain any one method to improve CMRR.(10 marks) 5 (a) Implement the following expression, using only one 4:1 MUX and few Logic gates
F(A,B,C,D) = ΠM (0, 1, 2, 3, 6, 8, 11, 13, 15)(10 marks) 5 (a) With a neat logic diagram explain the operation of 5-bit shift Register.(10 marks)

Write short notes on the following.

6 (a) 3-bit Bianry to gray code conversion.(7 marks) 6 (b) VHDL Program Format(7 marks) 6 (c) S-R and J-K Flip-Flop.(7 marks)