ASCII(7)						     Linux Programmer's Manual							  ASCII(7)

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 ''	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  ''	110   72    48	  H
       011   9	   09	 HT  '	'	111   73    49	  I
       012   10    0A	 LF  '
'	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  '
'	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 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  ver-
       tical 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_7(7)

Linux								    1999-08-08								  ASCII(7)