Number Systems: Interactive Quizzes for Electrical and Electronic Principles

Question 1

In computer programming, what is bit masking and provide a practical example of how it's used?

Accepted Answer

Bit masking involves using a bit pattern to selectively modify bits in a larger binary value, allowing for efficient data manipulation.

Answer

Bit masking is only used for encrypting data and has no other applications in programming.

Answer

Bit masking is a technique used solely for converting decimal numbers to binary numbers and vice versa.

Answer

Bit masking is only applicable to 8-bit binary numbers and has no use in larger bit sizes.

Question 2

Which logical operation does this truth table represent?
```
A | B | Result
0 | 0 | 0
0 | 1 | 1
1 | 0 | 1
1 | 1 | 1
```

Accepted Answer

OR

Answer

AND

Answer

XOR

Question 3

Convert the octal number 35 to its hexadecimal representation.

Accepted Answer

1D

Answer

25

Answer

39

Answer

2D

Question 4

Convert the hexadecimal number 2A to its octal representation.

Accepted Answer

42

Answer

32

Answer

52

Answer

62

Question 5

Which of the following is an invalid base for a number system?

Accepted Answer

15

Answer

2

Answer

8

Answer

10

Question 6

What is the radix of the decimal number system?

Accepted Answer

10

Answer

2

Answer

8

Answer

16

Question 7

Which number system is most commonly used to represent data in computers?

Accepted Answer

Binary

Answer

Octal

Answer

Decimal

Answer

Hexadecimal

Question 8

What is a key advantage of using the hexadecimal number system in computer programming?

Accepted Answer

Compactness and improved readability

Answer

Simplicity and ease of conversion

Answer

Faster processing and lower memory usage

Answer

Higher accuracy and numeric precision

Question 9

Calculate the decimal equivalent of the octal number 75.

Accepted Answer

63

Answer

57

Answer

49

Answer

61

Question 10

Convert the decimal number 255 into its hexadecimal equivalent.

Accepted Answer

FFh

Answer

100h

Answer

1FFh

Answer

F0h

Question 11

In the decimal number system, the base is:

Accepted Answer

10

Answer

2

Answer

8

Answer

16

Question 12

Which of the following is the largest number: 1101 (binary), 15 (decimal), or 1F (hexadecimal)?

Accepted Answer

1F (hexadecimal)

Answer

1101 (binary)

Answer

15 (decimal)

Question 13

Which of the following is an invalid base for a number system?

Accepted Answer

5

Answer

16

Answer

8

Answer

2

Question 14

Determine the decimal equivalent of the binary number 11111111.

Accepted Answer

255

Answer

257

Answer

256

Answer

254

Question 15

Which of the following is not a valid number system in digital electronics?

Accepted Answer

Quaternary

Answer

Octal

Answer

Decimal

Question 16

What is the radix of the binary number system?

Accepted Answer

2

Answer

8

Answer

10

Answer

16

Question 17

Which of the following is the hexadecimal equivalent of the decimal number 127?

Accepted Answer

7F

Answer

8F

Answer

9F

Answer

6F

Question 18

Which of the following is the binary equivalent of the decimal number 512?

Accepted Answer

1000000000

Answer

1010000000

Answer

1100000000

Question 19

What is the binary representation of the decimal number 18?

Accepted Answer

10010

Answer

11100

Answer

11010

Answer

11000

Question 20

What is the hexadecimal equivalent of the decimal number 255?

Accepted Answer

FF

Answer

FC

Answer

FE

Answer

FD

Question 21

Which number system is most commonly used in digital electronics?

Accepted Answer

Binary

Answer

Hexadecimal

Answer

Octal

Answer

Decimal

Question 22

What is the hexadecimal representation of the decimal number 10?

Accepted Answer

A

Answer

9

Answer

B

Question 23

A digital circuit uses a 16-bit register. How many unique values can this register store?

Accepted Answer

65,536

Answer

128,000

Answer

32,768

Answer

256