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#### Number Systems Important Questions

11th Standard

Reg.No. :
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Computer Applications

Time : 01:00:00 Hrs
Total Marks : 50
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. Which is a basic electronic circuit which operates on one or more signals?

(a)

Boolean algebra

(b)

Gate

(c)

Fundamental gates

(d)

Derived gates

5. Which gate is called as the logical inverter?

(a)

AND

(b)

OR

(c)

NOT

(d)

XNOR

6. Expansion of MSB is......

(a)

Most Sign Bit

(b)

Most Significant Bit

(c)

Medium Signal Bit

(d)

Most Significant Byte

7. Expansion of LSB is

(a)

Least Significant Byte

(b)

Least Sign Bit

(c)

Least Significant Bit

(d)

Left Significant Bit

8. The decimal value of 1010.012 is

(a)

10.5

(b)

10.25

(c)

10.05

(d)

10.025

9. The left most bit on the binary digit carries the largest weight is called......

(a)

LSB

(b)

MSB

(c)

Word

(d)

Byte

10. The Right most bit on the binary digit carries the smallest weight is called..........

(a)

LSB

(b)

MSB

(c)

RMB

(d)

LMB

11. 5 x 2 = 10
12. What is data?

13. Write the 1's complement procedure

14. Convert (46)10 into Binary number

15. What Is Boolean Algebra?

16. Write a short note on NAND Gate

17. 5 x 3 = 15
18. What is radix of a number system? Give example

20. Write the truth table of fundamental gates

21. Write a short note on XNOR gate

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

23. 3 x 5 = 15
24. a. Add 11010102 + 1011012
b. Subtract 11010112 - 1110102

25. Explain the fundamental gates of expression and truth table

26. How AND and OR can be realized using NAND and NOR gate