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#### Number Systems Book Back Questions

11th Standard

Reg.No. :
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Computer Science

Time : 00:45:00 Hrs
Total Marks : 30
5 x 1 = 5
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 characters can be handled in Binary Coded Decimal System?

(a)

64

(b)

255

(c)

256

(d)

128

3. Which amongst this is not an Octal number?

(a)

645

(b)

234

(c)

876

(d)

123

4. A + A =?

(a)

A

(b)

O

(c)

I

(d)

A

5. NAND is called as ......Gate

(a)

Fundamental Gate

(b)

Derived Gate

(c)

Logical Gate

(d)

Electronic gate

6. 3 x 2 = 6
7. What is data?

8. List the encoding systems for characters it memory?

9. Draw the truth table for XOR gate

10. 3 x 3 = 9
11. Write note on binary number System

12. Write the truth table of fundamental gates

13. Write the De Morgan's law.

14. 2 x 5 = 10
15. Find 1's Complement and 2's Complement for the following Decimal number.
(i) -98
(ii) -135

16. Explain the fundamental gates of expression and truth table