# Digital Principles and Systems Design CS2202 Important questions for nov/dec 2012 exams - anna university,chennai

Anna University,Chennai
Nov/Dec 2012 Examinations

Rejinpaul.com Important
Questions

Digital
Principles and Systems Design CS2202

UNIT I-V

1.
Reduce
the expression using Quine McCluskey method F(x1,x2,x3,x4,x5)=∑m(0,
2,4,5,6,7,8,10,14,17,18,21,29,31) + ∑d (11, 20, 22)

2.
Explain
the conversion of regular expression into canonical expression and their simplification
in SOP and POS forms

3.
Determine the minterm sum of product form of
the switching function F = ∑ (0, 1, 4, 5, 6, 11, 14, 15, 16, 17, 20,21,22, 30, 32,
33, 36, 37, 48, 49, 52,53, 59, 63)

4.
Using Tabulation method simplify
the Boolean function F(w, x, y, z) = ∑
(1, 2, 3, 5, 9, 12, 14, 15) which has the don’t care condition d(4, 8, 11)

5.
With a suitable block diagram explain the
operation of BCD adder

6.
Draw and explain the working of
a carry-look ahead adder

7.
A circuit receives only valid 5211 or 8421
BCD information and provides two output lines X and Y Design the circuit
such that X will provide an output anytime a valid 8421 BCD code appears
at the input and Y will provide an output anytime a valid 5211 BCD code
appears at the input

8.
Design Full adder and subtractor circuits
using NAND and NOR gates respectively

9.
Implement the switching function
z1=ab’d’e+a’b’c’d’e’+bc+de, z2==a’c’e, z3=bc+de+c’d’e’+bd, z4==a’c’e+ce using
5X8X4 programmable logic array

10.Explain with
necessary diagram a BCD to 7 segment display decoder

11. Design a 3 to 8-line decoder with necessary diagram

12.Implement a full adder with
two 4*1 multiplexers

13. Write
the HDL for the above circuit

14.Design MOD 6 synchronous sequential
circuit using JK flipflip

15. Design and explain the working of a up-down
ripple counter

16.Design a
synchronous sequential circuit using JK flip-flop to generate the following
sequence and repeat. 0, 1, 2, 4, 5,

17. With suitable example and diagram explain the hazards in
combinational and sequential logic circuits

18.Design the Tflip flop from the logic gates** **

19.Design a non
sequential ripple counter which will go through the states 3,4,5,7,8,9,10,3,4………………..draw bush
diagram

20.
Find a circuit that has no static hazards
and implements the Boolean function F(A,B,C,D)=∑ m(1,3,5,7,8,9,14,15)

21.Design an asynchronous
sequential circuit that has 2 inputs X2 and X1 and one output Z. When X1=0, the output Z is 0. The
first change in X2 that occurs while X1 is 1 will cause output Z to be 1. The
output Z will remain 1 until X1 returns to 0.

Digital Principles and Systems Design CS2202 Important questions for nov/dec 2012 exams - anna university,chennai
Reviewed by Rejin Paul
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