This download link is referred from the post: PTU B.Tech Question Papers 2020 March (All Branches)
Roll No.
Total No. of Pages : 02
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Total No. of Questions : 18
B.Tech (CSE) (Sem.-3)
DIGITAL CIRCUITS & LOGIC DESIGN
Subject Code : CS-205
M.Code : 56503
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Time : 3 Hrs. Max. Marks : 60
INSTRUCTIONS TO CANDIDATES :
- SECTION-A is COMPULSORY consisting of TEN questions carrying TWO marks each.
- SECTION-B contains FIVE questions carrying FIVE marks each and students have to attempt any FOUR questions.
- SECTION-C contains THREE questions carrying TEN marks each and students have to attempt any TWO questions.
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SECTION-A
Write briefly :
- Explain the working of OR, AND and NOT gates.
- Distinguish between SOP and POS forms!
- What are minimization techniques?
- What do you mean by toggle?
- What are Min and Max terms?
- What is the use of A/D and D/A conversions?
- What are shift registers?
- Draw the circuit diagram of a 8-input multiplexer.
- What is the race condition in S-R flip-flop? How is it resolved in D-flip-flop?
- Define a Flip-Flop with a suitable sketch?
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SECTION-B
- What is PLA? Design BCD to Excess-3 code convertor using PLA.
- What is a ROM? What are its types? Give characteristics of each.
- Convert D flip-flop to JK flip flop.
- Draw a circuit for the 4-input successive operation A/D convertor. Discuss its limitations.
- Reduce the following function using Karnaugh map technique : F(A,B,C,D) = Σ m(5,6,7,12,13) + Σ d(4,9,14,15)
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SECTION-C
- Explain the step-wise process for the sequential circuit design using state tables.
- What is a Programmable logic devices? What are their advantages? Explain in detail the architecture of a programmable logic device.
- a) Implement the function F= A’BC+ ABC’+A’BC’+AC" using PAL.
b) With the help of a diagram explain the working of R-2R ladder type DAC.
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NOTE : Disclosure of identity by writing mobile number or making passing request on any page of Answer sheet will lead to UMC case against the Student.
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This download link is referred from the post: PTU B.Tech Question Papers 2020 March (All Branches)