Analog & Digital Circuits - May 2013

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) Write a Hamming code for 1100.(5 marks) 1 (b) Perform 942₍₁₀₎-573₍₁₀₎ in BCD using 10's complement.(5 marks) 1 (c) Convert T flipflop into D flipflop.(5 marks) 1 (d) Implement the following function using 8: 1 MUX
f(A, B, C, D)=?m(0, 2, 6, 10, 12, 14)(5 marks) 2 (a) Design and implement BCD to ex-3 code converter(10 marks) 2 (b) Design 2 bit up/down asynchronous counter.(10 marks) 3 (a) Write short note on PAL and PLA.(8 marks) 3 (b) Given the logic expression
AB+AC+C+AD+ABC+ABC
(i) Express in std SOP form
(ii) Minimize using k-map realize using only NOR gates.(12 marks) 4 (a) Design 3 bit comparator.(10 marks) 4 (b) Minimize using Quine Mc Clusky method
F(A, B, C, D)=? (0,1,3,5,7,9,11,14)+d(2,14)(10 marks) 5 (a) Design a full subtractor using 2 half subtractor.(10 marks) 5 (b) Design 2 bit look ahead carry generator(10 marks) 6 (a) Design a synchronous counter for the following sequence using T F/F
6-3-5-2-0-4-1-7(12 marks) 6 (b) Prove that NAND and NOR are Universal Gates.(8 marks)

Write a short notes on any two:-

7 (a) Priority encoder(10 marks) 7 (b) VHDL Programming feature(10 marks) 7 (c) CAD Tools.(10 marks)