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NAME

       ascii  -  the  ASCII  character  set  encoded  in  octal,  decimal, and
       hexadecimal

DESCRIPTION

       ASCII is the American Standard Code for Information Interchange.  It is
       a  7-bit  code. Many 8-bit codes (such as ISO 8859-1, the Linux default
       character set) contain ASCII as their lower  half.   The  international
       counterpart of ASCII is known as ISO 646.

       The following table contains the 128 ASCII characters.

       C program ’\X’ escapes are noted.

       Oct   Dec   Hex   Char           Oct   Dec   Hex   Char
       ------------------------------------------------------------
       000   0     00    NUL ’\0’       100   64    40    @
       001   1     01    SOH            101   65    41    A
       002   2     02    STX            102   66    42    B
       003   3     03    ETX            103   67    43    C
       004   4     04    EOT            104   68    44    D
       005   5     05    ENQ            105   69    45    E
       006   6     06    ACK            106   70    46    F
       007   7     07    BEL ’\a’       107   71    47    G
       010   8     08    BS  ’\b’       110   72    48    H
       011   9     09    HT  ’\t’       111   73    49    I
       012   10    0A    LF  ’\n’       112   74    4A    J
       013   11    0B    VT  ’\v’       113   75    4B    K
       014   12    0C    FF  ’\f’       114   76    4C    L
       015   13    0D    CR  ’\r’       115   77    4D    M
       016   14    0E    SO             116   78    4E    N
       017   15    0F    SI             117   79    4F    O
       020   16    10    DLE            120   80    50    P
       021   17    11    DC1            121   81    51    Q
       022   18    12    DC2            122   82    52    R
       023   19    13    DC3            123   83    53    S
       024   20    14    DC4            124   84    54    T
       025   21    15    NAK            125   85    55    U
       026   22    16    SYN            126   86    56    V
       027   23    17    ETB            127   87    57    W
       030   24    18    CAN            130   88    58    X
       031   25    19    EM             131   89    59    Y
       032   26    1A    SUB            132   90    5A    Z
       033   27    1B    ESC            133   91    5B    [
       034   28    1C    FS             134   92    5C    \   ’\\’
       035   29    1D    GS             135   93    5D    ]
       036   30    1E    RS             136   94    5E    ^
       037   31    1F    US             137   95    5F    _
       040   32    20    SPACE          140   96    60    `
       041   33    21    !              141   97    61    a
       042   34    22    "              142   98    62    b
       043   35    23    #              143   99    63    c
       044   36    24    $              144   100   64    d
       045   37    25    %              145   101   65    e
       046   38    26    &              146   102   66    f
       047   39    27    ’              147   103   67    g
       050   40    28    (              150   104   68    h
       051   41    29    )              151   105   69    i
       052   42    2A    *              152   106   6A    j
       053   43    2B    +              153   107   6B    k

       054   44    2C    ,              154   108   6C    l
       055   45    2D    -              155   109   6D    m
       056   46    2E    .              156   110   6E    n
       057   47    2F    /              157   111   6F    o
       060   48    30    0              160   112   70    p
       061   49    31    1              161   113   71    q
       062   50    32    2              162   114   72    r
       063   51    33    3              163   115   73    s
       064   52    34    4              164   116   74    t
       065   53    35    5              165   117   75    u
       066   54    36    6              166   118   76    v
       067   55    37    7              167   119   77    w
       070   56    38    8              170   120   78    x
       071   57    39    9              171   121   79    y
       072   58    3A    :              172   122   7A    z
       073   59    3B    ;              173   123   7B    {
       074   60    3C    <              174   124   7C    |
       075   61    3D    =              175   125   7D    }
       076   62    3E    >              176   126   7E    ~
       077   63    3F    ?              177   127   7F    DEL

HISTORY

       An ascii manual page appeared in Version 7 of AT&T UNIX.

       On  older  terminals, the underscore code is displayed as a left arrow,
       called backarrow, the  caret  is  displayed  as  an  up-arrow  and  the
       vertical bar has a hole in the middle.

       Uppercase and lowercase characters differ by just one bit and the ASCII
       character 2 differs from the double quote by just one bit,  too.   That
       made  it  much  easier to encode characters mechanically or with a non-
       microcontroller-based electronic keyboard and that pairing was found on
       old teletypes.

       The  ASCII  standard  was  published  by  the  United States of America
       Standards Institute (USASI) in 1968.

SEE ALSO

       iso_8859-1(7),    iso_8859-15(7),    iso_8859-16(7),     iso_8859-2(7),
       iso_8859-7(7), iso_8859-9(7)

TABLES

       For convenience, let us give more compact tables in hex and decimal.

          2 3 4 5 6 7       30 40 50 60 70 80 90 100 110 120
        -------------      ---------------------------------
       0:   0 @ P ‘ p     0:    (  2  <  F  P  Z  d   n   x
       1: ! 1 A Q a q     1:    )  3  =  G  Q  [  e   o   y
       2: " 2 B R b r     2:    *  4  >  H  R  \  f   p   z
       3: # 3 C S c s     3: !  +  5  ?  I  S  ]  g   q   {
       4: $ 4 D T d t     4: "  ,  6  @  J  T  ^  h   r   |
       5: % 5 E U e u     5: #  -  7  A  K  U  _  i   s   }
       6: & 6 F V f v     6: $  .  8  B  L  V  ‘  j   t   ~
       7: ’ 7 G W g w     7: %  /  9  C  M  W  a  k   u  DEL
       8: ( 8 H X h x     8: &  0  :  D  N  X  b  l   v
       9: ) 9 I Y i y     9: ’  1  ;  E  O  Y  c  m   w
       A: * : J Z j z
       B: + ; K [ k {
       C: , < L \ l |
       D: - = M ] m }
       E: . > N ^ n ~
       F: / ? O _ o DEL