Q.1

The __________ code is a nonweighted binary code.

  • excess-3
  • gray
  • multibit
  • minival
Q.2

Digital electronics is based on the _________ numbering system.

  • decimal
  • hexadecimal
  • binary
  • octal
Q.3

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 _________.

  • 9's complement code
  • excess-3 code
  • 8421 code
  • gray code
Q.4

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

  • 9's complement code
  • excess-3 code
  • 8421 code
  • gray code
Q.5

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

  • LSB
  • duty cycle
  • MSB
  • frequency
Q.6

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

  • 4-bit binary code
  • 8-bit binary code
  • 16-bit binary code
  • ASCII code
Q.7

When using the excess-3 code a value of 3 is added to each column of decimal digits before it is converted to a 4-bit binary code.

  • True
  • False
Q.8

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

  • 01010101
  • 00110101
  • 00110010
  • 00110001
Q.9

Decimal numbers can be converted into binary by dividing by two and recording the remainders.

  • True
  • False
Q.10

The weight of the LSB as a binary number is:

  • 1
  • 2
  • 3
  • 4
Q.11

Base 10 refers to which number system?

  • binary coded decimal
  • decimal
  • octal
  • hexadecimal
Q.12

ASCII codes are used strictly for representing the letters in the alphabet.

  • True
  • False
Q.13

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

  • 11010001001000
  • 11010000101000
  • 011010010000010
  • 110100001101010
Q.14

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

  • 327.375
  • 12166
  • 1388
  • 1476
Q.15

In the gray code, each number is 3 greater than the binary representation of that number.

  • True
  • False
Q.16

What is the difference between binary coding and binary coded decimal?

  • Binary coding is pure binary.
  • BCD is pure binary.
  • Binary coding has a decimal format.
  • BCD has no decimal format.
Q.17

Convert the decimal number 151.75 to binary.

  • 10000111.11
  • 11010011.01
  • 00111100.00
  • 10010111.11
Q.18

64 hexadecimal equals 100 decimal.

  • True
  • False
Q.19

The addition 1 + 0 doesn't generate a carry bit; one does not exist.

  • True
  • False
Q.20

The process of converting a decimal number to its binary equivalent is called binary conversion.

  • True
  • False
0 h : 0 m : 1 s