B.Tech-COMPUTER SCIENCE AND ENGINEERING 1st Sem INTRODUCTION TO COMPUTERS(Guru Gobind Singh Indraprastha Vishwavidyalaya, Delhi-2009)

Time : 90 minutes
Maximum Marks : 30
Note : Attempt any 3 questions in all.

1. Do the following conversions:
(2x5=10 Marks)

1. (110011)2 to Decimal.
2. (12917)10 to Octal then Hexadecimal.
3. (11010.101) to Decimal
4. Subtract 1010101 from 1010010 using two`s compliment
5. Multiply 101101 by 101

2. Prepare a flow chart and Algorithm to find roots of a given quadratic equation.

3.
1. Explain volatile and non-volatile memory with examples.
2. Explain various I/O devices

4. Find syntax errors in the following:
(2x5=10 Marks)

1. char number=7;
2. int num=5.2;
3. printf("Hello);

for an integer i, calculate using heirarchy

4. i=3.9*3+4/9*6-2*5

5. 5*3+2+3/4%2

5. Write a program in `C` to find the smallest of the three numbers A, B, C.

6. Write a program in `C` to find whether a given number is even and greater than 15.