Number Systems and Codes MCQs

Question 1

What is the decimal value of the hexadecimal number 777?

Accepted Answer

1911

Answer

191

Answer

19

Answer

19111

Question 2

What is the resultant binary of the decimal problem 49 + 1 = ?

Accepted Answer

00110010

Answer

01010101

Answer

00110101

Answer

00110001

Question 3

3428 is the decimal value for which of the following binary coded decimal (BCD) groupings?

Accepted Answer

11010000101000

Answer

11010001001000

Answer

011010010000010

Answer

110100001101010

Question 4

What is the result when a decimal 5238 is converted to base 16?

Accepted Answer

1476

Answer

327.375

Answer

12166

Answer

1388

Question 5

Digital electronics is based on the _________ numbering system.

Accepted Answer

binary

Answer

decimal

Answer

hexadecimal

Answer

octal

Question 6

A BCD code that represents each digit of a decimal number by a binary number derived by adding 3 to its 4-bit true binary value is _________.

Accepted Answer

excess-3 code

Answer

9's complement code

Answer

8421 code

Answer

gray code

Question 7

A binary code that progresses such that only one bit changes between two successive codes is _________.

Accepted Answer

gray code

Answer

9's complement code

Answer

excess-3 code

Answer

8421 code

Question 8

A binary number's value changes most drastically when the ____ is changed.

Accepted Answer

MSB

Answer

LSB

Answer

duty cycle

Answer

frequency

Question 9

The binary coded decimal (BCD) code is a system that represents each of the 10 decimal digits as a(n) ____________.

Accepted Answer

4-bit binary code

Answer

8-bit binary code

Answer

16-bit binary code

Answer

ASCII code