Download PTU B.Tech 2021 Jan EE 3rd Sem 72164 Digital Electronics Question Paper

Roll No. _________________________ Total No. of Pages : 02

Total No. of Questions: 18 B.Tech.(EE) PT (Sem.-3)

DIGITAL ELECTRONICS

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Subject Code : BTEE-404

M.Code : 72164

Time : 3 Hrs. Max. Marks : 60

INSTRUCTION TO CANDIDATES :

1. SECTION-A is COMPULSORY consisting of TEN questions carrying TWO marks each.

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2. SECTION-B contains FIVE questions carrying FIVE marks each and students have to attempt any FOUR questions.
3. SECTION-C contains THREE questions carrying TEN marks each and students have to attempt any TWO questions.

SECTION-A

Answer briefly :

1. Convert Decimal Number 4587 into Octal and Hexadecimal Number systems.

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2. Subtract 21 from 36 using 2's complement method.
3. State and prove Demorgan's Theorem.
4. Convert AB + A'B' into POS form.
5. Define MOD counters.
6. Draw a VHDL view of a Digital model.

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7. What do you mean by figure of merit in Logic family?
8. Define accuracy of D/A converters.
9. Differentiate between RAM and ROM.
10. Define content addressable memories.

SECTION-B

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1. Design a 3 bit odd parity generator.
2. Minimize the following expression using Q-M method
   Y = ?m (1, 2, 3, 6, 7, 9, 10, 11, 13)
3. Design SR flip flop using JK flip flop.
4. Write a VHDL code for full adder.

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5. Draw and explain dual slop A/D converter.

SECTION-C

1. Differentiate between various types of ROM.
2. Explain FPGA in detail.
3. Design universal shift register.

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NOTE: Disclosure of Identity by writing Mobile No. or Making of passing request on any page of Answer Sheet will lead to UMC against the Student.

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