Gujarat Technological UniversityWinter 2025 examination

GTU 3130704 Digital Fundamentals (DF) Winter 2025 Question Paper & PDF

B.E. · Computer Engineering · Semester 3 · Subject code 3130704
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Total
70 marks
To pass
23 marks (33%)
Duration
2.5 Hours 10:30 AM – 1:00 PM
Questions
5 with internal choice
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19 of 25 questions on this paper were also asked in other years. 1 more is a type of question GTU sets again with new data. Each is marked below with the years it appeared.See all 31 repeated 3130704 questions, most asked first

Q.1

14 Marks
(a)
3 marksAsked in 2 of 6 papers
List out various logic families. Also list characteristics of digital IC.

Also asked in Summer 2024 Q1a

(b)
4 marksSame type asked in 4 of 6 papers
Convert the decimal number 225.225 to octal and hexadecimal.

Also asked in Summer 2026 Q1a, Summer 2024 Q2b, Summer 2023 Q1b

(c)
7 marksAsked in 2 of 6 papers
Implement AND, OR, EX-OR gates using NAND & NOR gates.

Also asked in Summer 2024 Q1c

Q.2

14 Marks
(a)
3 marks
Draw the logic diagram of 1-digit BCD adder.
(b)
4 marksAsked in 3 of 6 papers
State and prove De-Morgan’s theorems using truth-tables.

Also asked in Winter 2024 Q1b, Summer 2024 Q1b

(c)
7 marksAsked in 2 of 6 papers
Design 3-bit even parity generator circuit.

Also asked in Summer 2024 Q3c OR

(c)
7 marks
Design full adder circuit using decoder and multiplexer.

Q.3

14 Marks
(a)
3 marksAsked in 3 of 6 papers
Design half subtractor logic circuit.

Also asked in Summer 2025 Q3a OR, Summer 2023 Q2a

(b)
4 marksAsked in 3 of 6 papers
Implement D flip flop using JK flip flop.

Also asked in Summer 2025 Q4b OR, Winter 2024 Q3b OR

(c)
7 marksAsked in 2 of 6 papers
Design 2 - Bit Magnitude Comparator.

Also asked in Summer 2024 Q3c

(a)
3 marksAsked in 3 of 6 papers
Differentiate synchronous counter and asynchronous counter.

Also asked in Summer 2026 Q3a, Winter 2024 Q4a

(b)
4 marks

Draw & explain in brief the logic diagram of 4-bit bidirectional shift register.

(c)
7 marksAsked in 2 of 6 papers

Design a Combinational circuit that convert Binary to BCD code converter.

Also asked in Summer 2024 Q2c

Q.4

14 Marks
(a)
3 marks
Explain S-R clocked flip flop.
(b)
4 marksAsked in 3 of 6 papers
Explain the specification of D/A converter.

Also asked in Winter 2024 Q4b OR, Summer 2024 Q5b OR

(c)
7 marksAsked in 2 of 6 papers
Design mod-6 asynchronous counter using T flip flop.

Also asked in Winter 2024 Q2b

(a)
3 marksAsked in 2 of 6 papers
List out and explain any one application of the register.

Also asked in Summer 2025 Q4a OR

(b)
4 marksAsked in 2 of 6 papers
Design 4 X 16 decoder using two 3 X 8 decoders.

Also asked in Summer 2026 Q2c OR

(c)
7 marksAsked in 2 of 6 papers
Design a 3-bit synchronous up counter using JK flip-flops.

Also asked in Summer 2023 Q3c OR

Q.5

14 Marks
(a)
3 marksAsked in 5 of 6 papers
Compare SRAM with DRAM.

Also asked in Summer 2026 Q5a OR, Winter 2024 Q5a, Summer 2024 Q4a, Summer 2023 Q5a OR

(b)
4 marks
Draw & explain the block diagram of ALU.
(c)
7 marksAsked in 4 of 6 papers
Write a short note on FPGA.

Also asked in Summer 2026 Q5b, Summer 2025 Q5a OR, Winter 2024 Q5b

(a)
3 marksAsked in 2 of 6 papers
Explain classification of Memories.

Also asked in Summer 2025 Q5c OR

(b)
4 marksAsked in 3 of 6 papers
Explain R-2R ladder type D/A converter.

Also asked in Summer 2024 Q5b, Summer 2023 Q4c

(c)
7 marksAsked in 4 of 6 papers
Write a short note on ROM & its types.

Also asked in Summer 2026 Q5a, Winter 2024 Q5c OR, Summer 2024 Q4a OR

More Digital Fundamentals papers

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About this paper

Official Gujarat Technological University (GTU) examination paper for Digital Fundamentals (DF) (Winter 2025, B.E. · Computer Engineering, Sem 3). Features complete 70-mark regular & remedial examination pattern, official marking distribution across all 5 questions, and direct 1-click official PDF download.

Transcribed for student exam preparation from Gujarat Technological University official examination archives. Questions, syllabus guidelines, and curriculum marking schemes remain the intellectual property of Gujarat Technological University.

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