Solved question paper for DE Dec-2020 (B-TECH 3rd)
Solved Question Paper
Digital Electronics Dec-2020
PTU • B-TECH • Information Technology • 3rd • Dec-2020
Digital Electronics previous year question papers on BRpaper are organized for students of Punjab Technical University’s Bachelor of Technology program in the Information Technology stream, 3rd semester. This section makes it easier to browse subject-wise old question papers for Digital Electronics, so students can review how questions on topics such as number systems, logic gates, and combinational and sequential circuits are typically framed in past exams. Many students search for digital electronics with answers pdf while preparing for exams, and this page is built to support exactly that kind of subject-wise browsing and revision. BRpaper is not the official website of Punjab Technical University or any institution, and it does not publish official notices or academic updates.
These Questions are downloaded from www.brpaper.com. You can also download previous years question papers of 10th and 12th (PSEB & CBSE), B-Tech, Diploma, BBA, BCA, MBA, MCA, M-Tech, PGDCA, B-Com, BSc-IT, MSC-IT.
Solved Questions
Solved-
Perform the subtraction 1001−1 1102 using 1’s complement method of subtraction.Short Answer 2 Marks Dec-2020 • PTU B-TECH
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Convert 38_{6} hexadecimal number to binary.Short Answer 2 Marks Dec-2020 • PTU B-TECH
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Convert the BCD number 0001 1000 to decimal number.Short Answer 2 Marks Dec-2020 • PTU B-TECH
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Write the truth table of 3-input OR gate.Short Answer 2 Marks Dec-2020 • PTU B-TECH
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Give the functional difference between a NAND gate and a negative OR gate.Short Answer 2 Marks Dec-2020 • PTU B-TECH
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Construct a truth table for the given Boolean expression AB + BC.Short Answer 2 Marks Dec-2020 • PTU B-TECH
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Give the comparison between synchronous & Asynchronous sequential circuits.Short Answer 2 Marks Dec-2020 • PTU B-TECH
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Determine the resolution of the output from a DAC that has a 12-bit input.Short Answer 2 Marks Dec-2020 • PTU B-TECH
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What is the difference between static RAM and dynamic RAM?Short Answer 2 Marks Dec-2020 • PTU B-TECH
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Draw the logic diagram for SR latch using two NOR gates.Short Answer 2 Marks Dec-2020 • PTU B-TECH
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Using the Boolean Algebra, simplify the expression:
(left(A+ar{A}
ight)left(AB+ar{A}ar{B}C
ight))Short Answer 8 Marks Dec-2020 • PTU B-TECHExisting answers are stored as HTML; you can edit directly without converting to Markdown.
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Use a Karnaugh map to simplify the function to its minimum sum of product form :
X=ABCD+AˉBCD+ABˉCD+AˉCD+ABˉCˉD
Short Answer 8 Marks Dec-2020 • PTU B-TECHExisting answers are stored as HTML; you can edit directly without converting to Markdown.
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Design a Excess-3 to BCD code converter using minimum number of NAND gates.Long Answer 8 Marks Dec-2020 • PTU B-TECH
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Explain the operation of master-slave JK flip flop. Give its advantages.Long Answer 8 Marks Dec-2020 • PTU B-TECH
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May 2023 Explain the working of a JK flip-flop. Also, discuss how the problem of SR flip flop is solved in JK flip flop?
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Design a 4-bit asynchronous up/down counter and explain its working with the help of timing diagram.Long Answer 8 Marks Dec-2020 • PTU B-TECH
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Simplify us using K-map
(f(ABCD)=prod ext{M}(1,3,5,7,8,9,10,13,15)) and implement using NAND/OR logic.Long Answer 8 Marks Dec-2020 • PTU B-TECHExisting answers are stored as HTML; you can edit directly without converting to Markdown.
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a) Explain how a 4-bit R/2R register DAC works?
b) Design and working of a synchronous MOD-6 counter using JK FF.Long Answer 8 Marks Dec-2020 • PTU B-TECHExisting answers are stored as HTML; you can edit directly without converting to Markdown.
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Write short notes on any two :
a) PLA
b) King Counter
c) BCD to 7 segment decoderLong Answer 8 Marks Dec-2020 • PTU B-TECHExisting answers are stored as HTML; you can edit directly without converting to Markdown.
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FAQ
Frequently Asked Questions
Answers about this subject, solved papers, and preparation.
01 Where can I find Digital Electronics previous year question papers for Bachelor of Technology Information Technology, 3rd semester?
This page lists Digital Electronics question papers uploaded for Punjab Technical University Bachelor of Technology Information Technology, 3rd semester, organized for subject-wise browsing where available.
02 Are these official Punjab Technical University question papers?
BRpaper is not the official website of Punjab Technical University. These papers are shared for reference and revision purposes only and are not official university material.
03 How can previous year Digital Electronics papers help in exam preparation?
Reviewing past papers can help you understand how questions are typically framed, notice commonly repeated topics, and get a sense of the exam pattern before your own exam.
04 What kind of topics does Digital Electronics usually cover?
The question papers here relate to the Digital Electronics syllabus set by the university for this course and semester, which typically includes topics such as number systems, logic gates, and combinational and sequential circuits.
05 Does this page include a Digital Electronics with answers pdf or solved answers?
This page focuses on providing access to the previous year question papers themselves. A separate question bank or solved answers may not be available for every paper.
06 Can I find papers for other subjects in the same Bachelor of Technology Information Technology?
Yes, BRpaper organizes papers by university, course, stream, and semester, so you can browse other subjects within the same Punjab Technical University Bachelor of Technology Information Technology.