B.Tech. (EE) (Sem.–4) (2011 Batch)

DIGITAL ELECTRONICS

Subject Code : BTEC-404 Paper ID : [A1207]

SECTION-A

l. Write briefly :

a) Discuss one application of Gray code.

b) What is the significance of a truth table? Discuss.

c) Differentiate between multiplexer and an encoder.

d) List the advantages and disadvantages of K – map method.

e) Write down the advantages and disadvantages of successive approximation type A/D converter.
f) Differentiate between RAM and ROM.

g) What is a parity bit? Discuss its need.

h) Differentiate between Boolean algebra and ordinary algebra.

i) Define Fan-in, Fan-out and unit load with respect to the logic families.

j) Comment upon the accuracy and resolution of digital to analog converter.

SECTION-B

2. Use the laws of Boolean algebra, to reduce the following expression to their simplest form. Name the laws used at each step.
3. Draw the logic diagram and explain the working of 4 bit synchronous down counter.
4. Explain the working of a SR flip-flop. Also explain how the problems of SR flip flop are taken care by JK flip flop.
5. Compare TTL, ECL, MOS and RTL logical families.
6. What is ROM? Discuss its organization and types in detail.

SECTION-C

7. a) Draw the logic/circuit diagram of Binary ladder D/A converter and explain its working.
b) Draw and explain the working of a counter type A/D converter.

8. Discuss the following :a) Hamming code for error detection and correction
b) Decision control structure using VHDL 9. Reduce the expression
 m(0, 2, 3, 10, 11, 12, 13, 16, 17, 18, 19, 20, 21, 26, 27) to the
simplest possible form using Quine-McClusky method

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SECTION-C

Q3. Attempt any three questions. 3×10=30

Explain OSI Reference model in Details?
What are the various Ethernet electrical specifications?
What do you understand by topology, explain its types and also discuss their advantages and disadvantages?

Digital electron ics 4th sem B.TECH PTU QUESTION PAPER

Get Started

Accuracy and resolution of digital to analog converter.

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Section B :Digital electron ics 4th sem B.TECH PTU QUESTION PAPER

Use the laws of Boolean algebra, to reduce the following expression to their simplest form. Name the laws used at each step.

Use the laws of Boolean algebra Probem

Draw the logic diagram and explain the working of 4 bit synchronous down counter.

Explain the working of 4 bit synchronous down counter.

Explain the working of a SR flip-flop. Also explain how the problems of SR flip flop are taken care by JK flip flop.

Working of a SR flip-flop.

Compare TTL, ECL, MOS and RTL logical families.

What is ROM? Discuss its organization and types in detail.

ROM and its organization and types in detail.

Computer Network 5th Sem Diploma May 2018 Paper Click Here

Digital electron ics 4th sem B.TECH PTU QUESTION PAPER

Get Started https://www.youtube.com/watch?v=UHX6f8TIvX8https://www.youtube.com/watch?v=M_RR6LVICp0https://www.youtube.com/watch?v=mV41CMWonN4https://www.youtube.com/watch?v=s0LVPE0Q3LE&list=PLA9Q9SDZ781WXNAWit379A4CRLMvjGiUw&index=14&t=0s

Section c :-Computer Network 5th Sem Diploma May 2018 Paper

Draw the logic/circuit diagram of Binary ladder D/A converter and explain its working

Draw the logic/circuit diagram of Binary ladder D/A converter

Draw and explain the working of a counter type A/D converter.

Explain the working of a counter type A/D converter.

Discuss the following :a) Hamming code for error detection and correction

Hamming code for error detection and correction

b) Decision control structure using VHDL

Decision control structure using VHDL

Reduce the expression  m(0, 2, 3, 10, 11, 12, 13, 16, 17, 18, 19, 20, 21, 26, 27) to the simplest possible form using Quine-McClusky method

Computer Network 5th Sem Diploma May 2018 Paper Contact Us

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B.Tech. (EE) (Sem.–4) (2011 Batch)

DIGITAL ELECTRONICS

Subject Code : BTEC-404 Paper ID : [A1207]

SECTION-A

l. Write briefly :

a) Discuss one application of Gray code.

b) What is the significance of a truth table? Discuss.

c) Differentiate between multiplexer and an encoder.

d) List the advantages and disadvantages of K – map method.

e) Write down the advantages and disadvantages of successive approximation type A/D converter. f) Differentiate between RAM and ROM.

g) What is a parity bit? Discuss its need.

h) Differentiate between Boolean algebra and ordinary algebra.

i) Define Fan-in, Fan-out and unit load with respect to the logic families.

j) Comment upon the accuracy and resolution of digital to analog converter.

SECTION-B

SECTION-C

7. a) Draw the logic/circuit diagram of Binary ladder D/A converter and explain its working. b) Draw and explain the working of a counter type A/D converter.

8. Discuss the following :a) Hamming code for error detection and correction b) Decision control structure using VHDL 9. Reduce the expression  m(0, 2, 3, 10, 11, 12, 13, 16, 17, 18, 19, 20, 21, 26, 27) to the simplest possible form using Quine-McClusky method

Download Previous Year Diploma Paper of Computer Network 5th Sem Diploma May 2018 Paper

SECTION-C

Q3. Attempt any three questions. 3×10=30

Digital electron ics 4th sem B.TECH PTU QUESTION PAPER

Section a Digital electronics 4th sem B.TECH PTU QUESTION PAPER

Application of Gray code.

Significance of a truth table

Differentiate between multiplexer and an encoder.

Advantages and disadvantages of K – map method.

Advantages and disadvantages of successive approximation type A/D converter.

Differentiate between RAM and ROM.

Parity bit and its need.

Differentiate between Boolean algebra and ordinary algebra.

Fan-in, Fan-out and unit load with respect to the logic families.

Accuracy and resolution of digital to analog converter.

Optical Fiber Communication OFC 6th Sem Diploma May 2015 Solved Paper Click Here

Section B :Digital electron ics 4th sem B.TECH PTU QUESTION PAPER

Use the laws of Boolean algebra Probem

Explain the working of 4 bit synchronous down counter.

Working of a SR flip-flop.

Compare TTL, ECL, MOS and RTL logical families.

ROM and its organization and types in detail.

Computer Network 5th Sem Diploma May 2018 Paper Click Here

Digital electron ics 4th sem B.TECH PTU QUESTION PAPER

Section c :-Computer Network 5th Sem Diploma May 2018 Paper

Draw the logic/circuit diagram of Binary ladder D/A converter

Explain the working of a counter type A/D converter.

Hamming code for error detection and correction

Decision control structure using VHDL

Reduce the expression  m(0, 2, 3, 10, 11, 12, 13, 16, 17, 18, 19, 20, 21, 26, 27) to the simplest possible form using Quine-McClusky method

Computer Network 5th Sem Diploma May 2018 Paper Contact Us

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e) Write down the advantages and disadvantages of successive approximation type A/D converter.
f) Differentiate between RAM and ROM.

7. a) Draw the logic/circuit diagram of Binary ladder D/A converter and explain its working.
b) Draw and explain the working of a counter type A/D converter.

8. Discuss the following :a) Hamming code for error detection and correction
b) Decision control structure using VHDL 9. Reduce the expression
 m(0, 2, 3, 10, 11, 12, 13, 16, 17, 18, 19, 20, 21, 26, 27) to the
simplest possible form using Quine-McClusky method