Download GTU B.Tech 2020 Summer 3rd Sem 2130306 Fundamentals Of Digital Design Question Paper

Download GTU (Gujarat Technological University Ahmedabad) B.Tech/BE (Bachelor of Technology/ Bachelor of Engineering) 2020 Summer 3rd Sem 2130306 Fundamentals Of Digital Design Previous Question Paper

Seat No.: ________
Enrolment No.___________


GUJARAT TECHNOLOGICAL UNIVERSITY
BE - SEMESTER? III EXAMINATION ? SUMMER 2020
Subject Code: 2130306 Date:02/11/2020
Subject Name: FUNDAMENTALS OF DIGITAL DESIGN
Time: 02:30 PM TO 05:00 PM Total Marks: 70
Instructions:
1. Attempt all questions.

2. Make suitable assumptions wherever necessary.

3. Figures to the right indicate full marks.


MARKS
Q.1 (a) Differentiate Digital system and Analog system.
03

(b) Give the difference between Combinational circuits and Sequential circuits.
04

(c) 1) (AB.CD)16 = (______)2 = (________)8 = (_______)10
07
2) Using 10's complement, perform 3250 ? 9876.


Q.2 (a) Define Fan-out, Switching time, Noise margin.
03

(b) Draw symbol & truth-table for NAND, NOR, EX-OR & EX-NOR gate.
04

(c) Design 3-basic gates using universal gates.
07


OR


(c) Reduce
the
expression
(, , , ) = (0, 1,4,7,11,13,14) +
07
(5,10,15) using K-map and implement minimal expression using logic
gates.
Q.3 (a) Design Full subtractor using Half subtractor.
03

(b) Design 2-bit magnitude comparator.
04

(c) What is code converter? Design 4-bit BCD to XS-3 Code converter.
07


OR

Q.3 (a) Draw 4x1 multiplexer using basic gates.
03

(b) Design 8 to 3 encoder using logic gates.
04

(c) Design full adder circuit using universal gates.
07

Q.4 (a) Explain Accuracy & Resolution of DAC.
03

(b) Explain Flash type ADC.
04

(c) Design combinational circuit using PLA to implement 3-bit binary to gray
07
conversion.

OR

Q.4 (a) Give the c
omparison between PROM, PLA & PAL.
03

(b) Define VHDL, ABEL, FPGA & CPLD.
04

(c) Enlist types of D to A converters and explain any one in detail with its
07
advantages & disadvantages.
Q.5 (a) Explain Edge triggered RS-flipflop.
03

(b) Draw 4-bit serial-in, serial-out shift register using D- flipflop & RS- flipflop.
04

(c) Draw and explain master slave JK-flipflop.
07


OR
Q.5 (a) What is state diagram? Explain state diagram for Mealy circuit.
03
(b) Design binary subtractor using adders.
04
(c) Design combinational circuit using PROM to implement 3-bit binary to XS-
07
3 conversion.
*************
1

---