Number Systems and Codes Questions and Answers

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Q51
The binary number 11101011000111010 can be written in hexadecimal as ________.
  • A DD63A16
  • B 1D63A16
  • C 1D33A16
  • D 1D63116
Answer: Option B
Q52
Which of the following is an invalid BCD code?
  • A 0011
  • B 1101
  • C 0101
  • D 1001
Answer: Option B
Q53
What decimal number does 25 represent?
  • A 10
  • B 31
  • C 25
  • D 32
Answer: Option D
Q54
Convert the Gray code 1011 to binary
  • A 1011
  • B 1010
  • C 0100
  • D 1101
Answer: Option D
Q55
Determine the decimal equivalent of the signed binary number 11110100 in 1's complement.
  • A 116
  • B –12
  • C –11
  • D 128
Answer: Option C
Q56
What is the difference between binary coding and binary-coded decimal?
  • A BCD is pure binary.
  • B Binary coding has a decimal format.
  • C BCD has no decimal format.
  • D Binary coding is pure binary.
Answer: Option D
Q57
Convert the following decimal number to BCD.
  • A 011100100001
  • B 111010001
  • C 001010111
  • D 000100100111
Answer: Option D
Q58
Digital electronics is based on the ________ numbering system.
  • A decimal
  • B octal
  • C binary
  • D hexadecimal
Answer: Option C
Q59
An informational signal that makes use of binary digits is considered to be:
  • A solid state
  • B digital
  • C analog
  • D non-oscillating
Answer: Option B
Q60
The 1's complement of 10011101 is ________.
  • A 01100010
  • B 10011110
  • C 01100001
  • D 01100011
Answer: Option A

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