Digital Electronics-Number Systems and Codes

Digital Electronics-Number Systems and Codes
51. The binary number 11101011000111010 can be written in hexadecimal as ________.
  • DD63A16
  • 1D63A16
  • 1D33A16
  • 1D63116
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52. Which of the following is an invalid BCD code?
  • 0011
  • 1101
  • 0101
  • 1001
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53. What decimal number does 25 represent?
  • 10
  • 31
  • 25
  • 32
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54. Convert the Gray code 1011 to binary
  • 1011
  • 1010
  • 0100
  • 1101
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55. Determine the decimal equivalent of the signed binary number 11110100 in 1's complement.
  • 116
  • –12
  • –11
  • 128
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56. What is the difference between binary coding and binary-coded decimal?
  • BCD is pure binary.
  • Binary coding has a decimal format.
  • BCD has no decimal format.
  • Binary coding is pure binary.
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57. Convert the following decimal number to BCD.
  • 011100100001
  • 111010001
  • 001010111
  • 000100100111
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58. Digital electronics is based on the ________ numbering system.
  • decimal
  • octal
  • binary
  • hexadecimal
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59. An informational signal that makes use of binary digits is considered to be:
  • solid state
  • digital
  • analog
  • non-oscillating
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60. The 1's complement of 10011101 is ________.
  • 01100010
  • 10011110
  • 01100001
  • 01100011
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