Subject Code: 130701
GUJARAT TECHNOLOGICAL UNIVERSITY
--- Content provided by FirstRanker.com ---
BE - SEMESTER-III (OLD) EXAMINATION — WINTER 2018
Date: 22/11/2018
Subject Name: Digital Logic Design
Time: 10:30 AM TO 01:00 PM
Instructions:
--- Content provided by FirstRanker.com ---
- Attempt all questions.
- Make suitable assumptions wherever necessary.
- Figures to the right indicate full marks.
Q.1 (a) With neat logical diagram & truth table explain all the basic gates including NAND, NOR, EX-OR, EX-NOR gate. [07]
(b) Convert (4BAC)16 = ( )8 = ( )16 = ( )2 = ( )10 [07]
--- Content provided by FirstRanker.com ---
Q.2 (a) State and prove Demorgan’s theorem. [07]
(b) Simplify the following Boolean function using k-map [07]
(i) F(w,x,y,z)= Sm (0, 1, 2, 4, 5, 6, 8, 9, 12, 13, 14)
(ii) F(x,y,z)= Sm(0,1,3,4,5,7)
OR
--- Content provided by FirstRanker.com ---
Q.3 (a) Design a full adder circuit using two half adders & gates. [07]
(b) Simplify following Boolean function by using the tabulation method [07]
F(w,x,y,z)= Sm (0, 1, 2, 8, 10, 11, 14, 15)
Q.4 (a) Using the law of Boolean algebra prove that [07]
(i) AB+BC+A’C=AB+A’C (ii) A[ B+ C (AB + AC)’] = AB. [07]
--- Content provided by FirstRanker.com ---
OR
Q.4 (b) Design and explain a logic diagram of 3 to 8 Decoder. [07]
Q.5 (a) Design and explain 4 x 1 Multiplexer. [07]
(b) Draw & explain T Flip Flop & D Flip Flop. [07]
Q.5 (a) Realize the expression F (A, B, C, D)= S m (4, 6, 7, 8, 9, 12, 14, 15) using an 8:1 MUX. [07]
--- Content provided by FirstRanker.com ---
OR
Q.5 (b) Write a note on Binary Ripple Counter. [07]
Q.5 (a) Explain JK Flip Flop with its characteristic table. [07]
(b) Write a short note on Hard-Wire Control. [07]
Q.5 (a) Design a circuit for Binary to Gray code conversion. [07]
--- Content provided by FirstRanker.com ---
OR
Q.5 (b) Explain Macro Operation v/s Micro Operation. [07]
Q.5 Implement Full Subtractor circuit with the help of Decoder & logic gates. [07]
Total Marks: 70
--- Content provided by FirstRanker.com ---
This download link is referred from the post: GTU BE/B.Tech 2018 Winter Question Papers || Gujarat Technological University
--- Content provided by FirstRanker.com ---