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18. Hexadecimal notation


  • Simplifies notation of bit patterns.

  • Much better alternative, compared to binary number notation.

  • Simplifies notation of long binary strings, such as entire blocks of computer memory.

  • Hexadecimal notation is used mainly for human convinience.

  • Hexadecimal notation represents numbers
    of base 16, calculated as

    • h3*163 + h2*162 + h1*161 + h0*160

    where h3, h2, h1, and h0 are values from the Hexadecimal column of the table.

  •  

    Decimal Hexadecimal Octal Binary
    0
    1
    2
    3
    4
    5
    6
    7
    8
    9
    10
    11
    12
    13
    14
    15
    0
    1
    2
    3
    4
    5
    6
    7
    8
    9
    A
    B
    C
    D
    E
    F
    000
    001
    002
    003
    004
    005
    006
    007
    010
    011
    012
    013
    014
    015
    016
    017
    0000
    0001
    0010
    0011
    0100
    0101
    0110
    0111
    1000
    1001
    1010
    1011
    1100
    1101
    1110
    1111

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