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Question Paper: Digital Logic Design & Analysis : Question Paper Dec 2011 - Computer Engineering (Semester 3) | Mumbai University (MU)
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Digital Logic Design & Analysis - Dec 2011

Computer Engineering (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 (650.17)8 into decimal, binary and hexadecimal.(6 marks) 1(b) Explain ALU with the help of a block diagram.(6 marks) 1(c) State and explain distributive and associative laws for Boolean expression.(4 marks) 1(d) Determine the truth table for the circuit given in Fig. 1:

(4 marks)
2(a) Design 16:1 MUX using 4:1 MUX.(10 marks) 2(b) Simplify using K-map, obtain minimal SOP equation and realise only by using NAND gates.f(A, B, C, D) = ?M (1,2,3,8,9,10,11,14) + d(7,15) (10 marks) 3(a) Using Quine McCluskey method, determine the minimal SOP form for:F(A,B,C,D,E,F,G) = ? m(20,28,38,39,52,60,102,103,107) (10 marks) 3(b) Design a BCD adder using 4-bit binary adder and explain.(10 marks) 4(a) What is a shift register? Explain 4-bit bidirectional shift register.(10 marks) 4(b) Design a MOD-6 synchronous up counter and explain its operation.(10 marks) 5(a) Implement the following expression using 8:1 MUX:F(A,B,C,D) = π m(0,1,3,6,9,11,12,13,15) (10 marks) 5(b) Explain with a neat diagram 2 input TTL NAND gate in detail.(10 marks) 6(a) Convert T flip-flop to D flip-flop.(10 marks) 6(b) Compare the different logic families with respect to the following parameters - Fan in, Fan out, Noise margin, speed and power dissipation.(10 marks) 7(a) Decade counters:(7 marks) 7(b) DeMorgan's laws:(7 marks) 7(c ) Race around condition:(6 marks)

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