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Posted Date: 04 Mar 2008 Posted By: Girish Patil Member Level: Platinum
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2006 Dr. Bhim Rao Ambedkar University(Agra University) B.E Computer Science Swithing theory and Logic Design Question paper
Y-310
SECOND YEAR OF COMPUTER SCIENCE AND ENGINEERING (PART-1) EXAMINATION, 2007
SWITCHING THEORY AND LOGIC DESIGN
Total Marks: 100
Time: 3.00pm to 6.00pm
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) what is universal gate? Explain NAND gate as a universal gate.[Marks 8]
B) Perform the following conversions:[Marks 8]
1) (AGC.8)16= Hexadecimal to octal
2) (713)8 Octal to binary
3) (49.78)10 decimal to binary
4) (1111.11)2 binary to decimal
.2 a) minimize the equations using Boolean algebraic theorems and implement minimized equations using basic digital circuits A+AB+AB.[Marks 8]
b) Draw and Explain carry look ahead adder. [Marks 7]
Q.3 a) Write a truth table for S-R and J-K flip flop and show block schematics for each.[Marks 8]
b) Implement 16*4 memories using 16*4 memory chips.[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) Explain with suitable algorithms following conversions: [Marks 15]
1. Gray to Binary
2. Binary to BCD
Q.7 Solve the following:
1. (1234)10= (?)16 [Marks 4]
2. (567.B) 10= (?)10 [Marks 3]
3. (775)8= (?)10 [Marks 4]
4. (FED) 16= (?)10 [Marks 4]
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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