#### Number Systems Important Questions

11th Standard

Reg.No. :
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Computer Applications

Time : 01:00:00 Hrs
Total Marks : 50
5 x 1 = 5
1. How many characters can be handled in Binary Coded Decimal System?

(a)

64

(b)

255

(c)

256

(d)

128

2. What is the 1's complement of 00100110?

(a)

00100110

(b)

11011001

(c)

11010001

(d)

00101001

3. Which gate is called as the logical inverter?

(a)

AND

(b)

OR

(c)

NOT

(d)

XNOR

4. The processed data is called

(a)

Information

(b)

Knowledge

(c)

datum

(d)

files

5. 1 Byte = ........... bits.

(a)

8

(b)

16

(c)

1024

(d)

512

6. 5 x 2 = 10
7. Write the 1's complement procedure

8. We cannot find 1's complement for (28)10 State reason.

9. Draw the truth table for XOR gate

10. Write the associative laws?

11. How the data classified based on their size?

12. 5 x 3 = 15
13. Write note on binary number System

14. Write short note on ISCII.

15. Write the truth table of fundamental gates

16. Reason out why the NAND an NOR are called universal gates?

17. Write the De Morgan's law.

18. 4 x 5 = 20
19. a. Find 1's Complement and 2's Complement for the following Decimal number. = -98
b. Find 1's Complement and 2's Complement for the following Decimal number. = -135

20. Explain the following terms in detail. (1) ISCII (2) TSCII

21. Write the 1's complement number and 2's complement number for the following decimal numbers: (A) 22 (B) -13 (C) 65 (D) - 46 (E) 255

22. Convert the following Octal numbers into Binary numbers. - 6458