#### Number Systems - Important Question Paper

11th Standard

Reg.No. :
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Computer Technology

Time : 01:00:00 Hrs
Total Marks : 50

Part A

10 x 1 = 10
1. Which refers to the number of bits processed by a computer's CPU?

(a)

Byte

(b)

Nibble

(c)

Word length

(d)

Bit

2. How many bytes does 1 KiloByte contain?

(a)

1000

(b)

8

(c)

4

(d)

1024

3. Expansion for ASCII

(a)

American School Code for Information Interchange

(b)

American Standard Code for Information Interchange

(c)

All Standard Code for Information Interchange

(d)

American Society Code for Information Interchange

4. 2$\wedge$50 is referred as

(a)

kilo

(b)

Tera

(c)

Peta

(d)

Zetta

5. Which gate is called as the logical inverter?

(a)

AND

(b)

OR

(c)

NOT

(d)

XNOR

6. A + A =?

(a)

A

(b)

O

(c)

I

(d)

A

7. NAND is called as ......Gate

(a)

Fundamental Gate

(b)

Derived Gate

(c)

Logical Gate

(d)

Electronic gate

8. Data means..............

(a)

a set of values

(b)

a set of information

(c)

a set of records

(d)

a set of files

9. The singular form of data is...........

(a)

Record

(b)

File

(c)

Datum

(d)

Values

10. How the message represented in computers?

(a)

Information

(b)

data

(c)

Knowledge

(d)

all of these

11. Part B

6 x 2 = 12
12. Name the Number system is used in general

13. Name the four types of Number system.

14. Write the radix of Decimal, Binary, Octal, Hexadecimal Number systems.

15. How the sequence of Octal numbers looks like?

16. Name the frequently used number system

17. How many procedures for converting from decimal binary to what are they?

18. Part C

6 x 3 = 18
19. Why is the number conversion necessary?

20. (101010)2 $\rightarrow$ (?10$\rightarrow$ (?10)

21. Perform the following expressions. (COFFEE)16 = (?)2

22. Complete the following Octal numbers 365, 366, 367,.......

23. Write the three common ways of representing a signed binary number?

24. What are the advantages of two's complement number?

25. Part D

2 x 5 = 10
26. Write the steps for converting Decimal to Binary numbers.

27. Convert the Following - (101.10)16 $\rightarrow$  (?2) = (?)10