#### Number Systems Important Questions

11th Standard

Reg.No. :
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Computer Technology

Time : 01:00:00 Hrs
Total Marks : 50
5 x 1 = 5
1. How many bytes does 1 KiloByte contain?

(a)

1000

(b)

8

(c)

4

(d)

1024

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

(a)

00100110

(b)

11011001

(c)

11010001

(d)

00101001

3. Which amongst this is not an Octal number?

(a)

645

(b)

234

(c)

876

(d)

123

4. NAND is called as ______ Gate

(a)

Fundamental Gate

(b)

Derived Gate

(c)

Logical Gate

(d)

Electronic gate

5. How the information entered in a computer?

(a)

Knowledge

(b)

data

(c)

ASCII Value

(d)

BCD

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

8. Convert (46)10 into Binary number.

9. List the encoding systems that represents characters in memory

10. Write a short note on NAND Gate.

11. What are derived gates?

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. Give the truth table of XOR gate.

17. Describe Octal Number system.

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

21. Convert the Following - (3674)8 $\rightarrow$ (?2) = (?)10