# I B.Tech Supplimentary Examinations, Aug/Sep 2008

# INTRODUCTION TO COMPUTERS

# SET-IV

1. (a) What is a microprocessor? Give some examples?

(b) Distinguish between the following:

i. Line printer and Laser printer

ii. Floppy disk and Hard disk

iii. Address bus and Control bus

2. (a) Give various features of distributed operating system.

(b) Write the following numbers in BCD

i. 5678

ii. 1558

iii. 4368

3. (a) Define the following with examples:

i. C tokens

ii. Identifiers

iii. Keyword

(b) Define a constant. Mention the different types of constants and give their general form with an example.

(c) Differentiate Constants and Variables

4. (a) What are embedded structures? Give an appropriate example for embedded structure.

(b) What is the need for an array of structures? Explain with an example.

(c) When do you use pointers to structures? Explain with an example.

5. (a) Write an algorithm for Bisection method.

(b) Find the root of the equation

x2−4x−10 = 0 using Newton Raphson method.

6. (a) Solve the following system of equation by Gaussian Elimination method.

x1 − x2 + x3 = 1,−3x1 + 2x2 − 3x3 = 6,

2x1 − 5x2 + 4x3 = 5.

(b) Write an algorithm for Gaussian Elimination method.

7. (a) Write an algorithm to implement the linear least squares formulae.

(b) An experiment gave the following table of values for the dependent variable y for a set of known values of x. Obtain an appropriate straight line y=a+bx.

X 1 2 3 4 5 6 7 8 9

Y 5.5 7.0 9.6 11.5 12.6 14.4 17.6 19.5 20.5

8. (a) Given that

X 4.0 4.2 4.4 4.6 4.8 5.0 5.2

log(x) 1.3863 1.4351 1.4816 1.5261 1.5686 1.6094 1.6487

Evaluate 5.2R4logx dx by Simpsons 3/8 rule.

(b) Solve dydx= x+y, y(0) = 1, using Runge – kutta 4th order method to find y(.5) and y(1) using h = 0.5