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Posted Date: 03 Mar 2008 Posted By: Girish Patil Member Level: Platinum
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2005 Dr. Bhim Rao Ambedkar University(Agra University) B.Tech Information Technology Swithing theory and Logic Design Question paper
H-419
SECOND YEAR OF COMPUTER SCIENCE AND ENGINEERING (PART-1) EXAMINATION, 2005
SWITCHING THEORY AND LOGIC DESIGN
Total Marks: 100
Time: 2.30pm to 5.30pm
Instructions: 1) Question no.1st and 5th are compulsory
2) Attempt any two questions from each section
3) Figures to right indicate full marks.
SECTION-1
Q.1.a) Convert (859.42)16 to decimal and binary.[Marks 4]
b) Write a note on: [Marks 4]
1) D type flip-flop
2) T type flip-flop
c) Explain the read operation of semiconductor memory.[Marks 4]
d) Compare minterm and maxterm.[Marks 4]
e) Design half adder using NAND gate.[Marks 4]
Q.2 a) Explain S-R flip- flop? How to overcome it?[Marks 8]
b) Implement 16*4 memories using 16*4 memory chips.[Marks 7]
Q.3 a) Prove the following using Boolean algebraic theorems:[Marks 8]
1) A+AB+AB=A+B
2) A+ABC+BCA+DA+DA+AD= (A+B+D). (A+C+D)
b) Explain carry look ahead adder.[Marks 8]
Q.4 a) Minimize using K-map: [Marks 8]
F(A,B,C,D)=PI M(1,2,7,8,13,14)+d(0,5,9)
b) Explain standard SOP and pos form of: [Marks 7]
Y= (A+BC) (B+CA)
SECTION-2
Q.5 answer any four: [Marks 20=5*4]
a) What is modulus of counter? Draw mod=10 counter.
b) Explain use of state diagrams.
c) State applications of shift registers.
d) Implement following expressions using suitable a MUX: f (a, b, c) =m (0, 4, 7)
e) Give design steps of digital circuits using MSI.
Q.6 a) Draw and explain 4-bit shift register, using waveforms. [Marks 10]
b) Convert (ACE9)16 to decimal and then octal no. [Marks 5]
Q.7 Short notes (any three): [Marks 15=5*3]
a) UP/DOWN counter
b) Excess-3 codes
c) Priority generator
d) BCD to 7 segment decoder
e) Cascading of counters
Q.8) a) with the help of block diagram explain synchronous counter.[Marks 8]
b) Explain 7447 with the help of a diagram.[Marks 7]
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