## Digital Electronincs Question Paper of 3rd Semester IT(D) Download Previous Years Question Paper 4

• Friday, September 09, 2016

S.B. Roll no. __________
DIGITAL ELECTRONINCS
3rd Exam/Comp/0262/May’10
Duration: 3 hrs
Section –A

1.
a.     No. of binary bits to represent a digital of octal no _______
b.     Radix of octal no is _______
c.      A+B +C= D represents a ______ gage
d.     Statement of commutative law is ____
e.      Demuitiplexer is used to route data from ____ to ____ outputs
f.       EEPROM stands for ____
g.     S-R flip flop do not allow input as S = _____ and R = ______
h.     The layout of TTL gate is about __
i.       The range of number which can be stored in an eight bit register _____ to _______
j.       The data word of 4 bits is known as _____

2.
a.     Write down the difference between Anologanel digital signal.

b.     Simplify the following using Beelean Algebra

A= XY +XZ+XYZ (XY+5)

c.      Draw the symbol and truth table of AND gate.

d.     Definition of SSI, MSI, LSI and VLSI.

e.      Explain the concept of parity.

AB+AC+ABC(AB+C)

f.       Write down the application of A/D and D/A converter.

Section –C
Note: Attempt any three questions

3.     Explain the working of universal shift register. Draw the circuit diagram?

4.     Draw and explain the working of a mod – 10 decade counter using J-K flip-flops.

5.     Explain the working principle of J-K master/ slae flip flop and draw its truth table.

6.     Write short note on

a.     NAND as universal gate

b.     NOR as universal gate