MU Analog & Digital Circuits - December 2011 Exam Question Paper

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MU Information Technology (Semester 3)
Analog & Digital Circuits
December 2011

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

1(a) Perform 492₍₁₀₎ - 275₍₁₀₎ in BCD using 10's complement

5 M

1(b)(i) Simplify: (B+BC)(B+BC)(B+D)

2 M

1(b)(ii) Simplify ? m (0, 1,2,3,5,7, 8, 9, 10, 12, 13) using K-map

2 M

1(c) Implement the following using decoder
f₁ (A,B,C) = ? m(0,4,7) + d(2,3)
f₂ (A,B,C) = ? m(1,5,6)
f₃ (A,B,C) = ? m(0,2,4,6)

3 M

1(d)(i) Write the truth table and excitation table of JK flip flop.

4 M

1(d)(ii) Briefly explain CAD tools for Digital Design.

4 M

2(a) Minimize ? m(0,1,2,8,9,15,17,21,24,25,27,31) using Quine-McCluskey method. Also find most essential prime implicants.

10 M

2(b) Prove that NAND and NOR are universal gates.

10 M

3(a) Design a BCD adder.

10 M

3(b) Implement Full adder using 8:1 MUX

10 M

4(a) Design MOD 12 synchronous counter using JK flip flop.

10 M

4(b) Convert: -
SR to D F/F
JK to T F/F

10 M

5(a) Given the logic expression AB + AC + C + AD + ABC + ABC
(i) Express in standard SOP form
(ii) Minimize using K-map and realise using only NAND gates.

12 M

5(b) Implement following using only one 8:1 MUX and few gates.
F=?m(0,1,3,4,5,7,9,10,12,13,15)

8 M

6(a) Design 4-bit asynchronous up/down counter.

10 M

6(b) Explain 4-bit bidirectional shift register. What are the uses of register?

10 M

Write short notes on any two of the following:-

7(a) ALU

10 M

7(b) Priority Encoder

10 M

7(c) PAL and PLA

10 M

7(d) VHDL features

10 M

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