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Data Representation

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    Data representation in computing
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  • What word is used to describe how loud a sound is?
    Amplitude
  •  15
  • What word is used to describe the pitch of a sound?
    Frequency
  •  15
  • What device is used to convert sound into binary?
    Analogue to digital converter
  •  15
  • What is sampling?
    Measurements of the sound wave taken at regular intervals
  •  15
  • What is meant by sample rate?
    The number of samples taken per second
  •  15
  • What is sample rate measured in?
    Hertz (Hz)
  •  15
  • What is sample resolution?
    The number of bits used to store each measurement of sound amplitude
  •  15
  • What is the formula for calculating file size?
    sample rate x sample resolution x time in seconds
  •  15
  • Which character set represents billions of characters?
    Unicode
  •  15
  • Which character set is commonly used for European languages?
    ASCII
  •  15
  • What is a character set?
    A complete collection of characters
  •  15
  • What is the name for a base 2 set of values?
    Binary
  •  15
  • What is the name given for a base 10 set of values?
    Denary
  •  15
  • What is the name given for a base 16 set of values?
    Hexadecimal
  •  15
  • What are all the possible 'digits' to represent values in hexadecimal?
    0-9, A-F
  •  15
  • Give two examples of where hex is used.
    MAC addresses, HTML colour codes, error codes
  •  15