Subject Code: 130701
GUJARAT TECHNOLOGICAL UNIVERSITY
--- Content provided by FirstRanker.com ---
BE - SEMESTER- III (OLD) EXAMINATION - SUMMER 2019
Date: 01/06/2019
Subject Name: Digital Logic Design
Time: 02:30 PM TO 05:00 PM Total Marks: 70
Instructions:
--- Content provided by FirstRanker.com ---
- Attempt all questions.
- Make suitable assumptions wherever necessary.
- Figures to the right indicate full marks.
Q.1
(a) Add (17)10 + (22)10 in binary. Convert the answer into Gray array.
--- Content provided by FirstRanker.com ---
(b) What is the significance of a Karnaugh map for solving combinational circuits? Solve f(a,b,c,d) = S(5,7,12,13,14,15) using a K map
Q.2
(a) Explain the (r-1)’s complement method of operation using example
(b) Discuss canonical and standard form of representation.
OR
--- Content provided by FirstRanker.com ---
(b) What is positive and negative logic? Give one example of each.
Q.3
(a) Use NOR gate as a universal gate and construct all basic gates from it.
(b) Construct a Full Adder from a Half Adder.
OR
--- Content provided by FirstRanker.com ---
Q.3 (a) Use NAND gate as a universal gate and construct all basic gates from it.
(b) Implement a binary to Gray converter. State its significance.
Q.4
(a) How does an encoder circuit work? Explain in terms of symbol, block diagram and truth table.
(b) Write a short note on Arithmetic, Logic and Shift operations.
--- Content provided by FirstRanker.com ---
OR
Q.4 (a) How does a multiplexer circuit work? Explain in terms of symbol, block diagram and truth table.
(b) Show the working of Shift Register using symbol, block diagram and truth table.
Q.5
(a) What is a PLA circuit? Explain in details about it.
--- Content provided by FirstRanker.com ---
(b) Explain about any one Flip Flop circuit using its symbol, block diagram, truth table and characteristics equation.
OR
Q.5 (a) Explain about a synchronous counter using 3 bits.
(b) Classify memories. Describe in details about any one type.
--- Content provided by FirstRanker.com ---
This download link is referred from the post: GTU BE 2019 Summer Question Papers || Gujarat Technological University
--- Content provided by FirstRanker.com ---