University : Agra University / Dr. Bhim Rao Ambedkar University
Question Paper Code : Y-310
Course Year : Second Year
Computer Science and Engineering
(Part-I) Examination, 2007
SWITCHING THEORY AND LOGIC DESIGN
Total Marks: 100
Time: 3.00 pm to 6.00 pm
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]
Question Paper Code : Y-310
Course Year : Second Year
Computer Science and Engineering
(Part-I) Examination, 2007
SWITCHING THEORY AND LOGIC DESIGN
Total Marks: 100
Time: 3.00 pm to 6.00 pm
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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