Principles of Digital Design
2008-09 Anna university question paper- PDS (Digital Design)
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1. Solve (247.36) base 8 , =(X)base2 =(Y)base 2
2.Find the complement of f=x(Y+z) and show that f+f’=1
3.Realize the function y=a+b only using nand gates
4.Express the minterm m21 using minimum number of variables
5.Implement a full adder using two half adder and OR GATE
6.Mention the need for a carry look ahead adder.
7.What are the conditions to check the equality of two n bit binary numbers A and B.
8.What are the applications of HDL processing
9.Realize the following expressions sing verilog HDL
X = a+b’c+bd
Y=(a+b)(c’+d)
10.Draw the logic diagram of a combinational circuit which helps in data distribution.
11.Realize the function f(a,b,c) = ∑ m(1,2,6,7) using a decoder
12.What are the different types of programming the PLA ?
13.Construct JK flip-flop using D flip-flop?
14.Compare the combinational circuit and sequential logic circuit.
15.Write the HDL behavioral description of 4 bit shift registers.
16.What is a race around condition?
17.Draw the hazard free circuit for the Boolean expression.
y=x1x2 + x2’x3
18.Define the fundamental mode.
19.What are the steps to be followed for the purpose of merging a flow table?
20.What is the reason for essential hazard?
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