ASCII -- Definition

ASCII  is  an  acronym  for  the  American Standard  Code  for  Information
Interchange,  as  defined  by  the  American National  Standards  Institute
standard X3.4-1977.  It is a  table of seven-bit binary numbers that encode
the letters  of the alphabet, numerals, punctuation,  and the most commonly
used control sequences for printers and terminals.  ASCII codes are used on
all microcomputers sold in the United States.

The  following table  gives  the ASCII  characters in  octal, decimal,  and
hexadecimal  numbers, their  definitions, and  expands  abbreviations where
necessary.

000  0    0x00   NUL  <ctrl-@>Null character
001  1    0x01   SOH  <ctrl-A>Start of header
002  2    0x02   STX  <ctrl-B>Start of text
003  3    0x03   ETX  <ctrl-C>End of text
004  4    0x04   EOT  <ctrl-D>End of transmission
005  5    0x05   ENQ  <ctrl-E>Enquiry
006  6    0x06   ACK  <ctrl-F>Positive acknowledgement
007  7    0x07   BEL  <ctrl-G>Bell
010  8    0x08   BS   <ctrl-H>Backspace
011  9    0x09   HT   <ctrl-I>Horizontal tab
012  10   0x0A   LF   <ctrl-J>Line feed
013  11   0x0B   VT   <ctrl-K>Vertical tab
014  12   0x0C   FF   <ctrl-L>Form feed
015  13   0x0D   CR   <ctrl-M>Carriage return
016  14   0x0E   SO   <ctrl-N>Shift out
017  15   0x0F   SI   <ctrl-O>Shift in
020  16   0x10   DLE  <ctrl-P>Data link escape
021  17   0x11   DC1  <ctrl-Q>Device control 1 (XON)
022  18   0x12   DC2  <ctrl-R>Device control 2 (tape on)
023  19   0x13   DC3  <ctrl-S>Device control 3 (XOFF)
024  20   0x14   DC4  <ctrl-T>Device control 4 (tape off)
025  21   0x15   NAK  <ctrl-U>Negative acknowledgement
026  22   0x16   SYN  <ctrl-V>Synchronize
027  23   0x17   ETB  <ctrl-W>End of transmission block
030  24   0x18   CAN  <ctrl-X>Cancel
031  25   0x19   EM   <ctrl-Y>End of medium
032  26   0x1A   SUB  <ctrl-Z>Substitute
033  27   0x1B   ESC  <ctrl-[>Escape
034  28   0x1C   FS   <ctrl-\>Form separator
035  29   0x1D   GS   <ctrl-]>Group separator
036  30   0x1E   RS   <ctrl-^>Record separator
037  31   0x1F   US   <ctrl-_>Unit separator
040  32   0x20   SP   Space
041  33   0x21   !    Exclamation point
042  34   0x22   "    Quotation mark
043  35   0x23   #    Pound sign (sharp)
044  36   0x24   $    Dollar sign
045  37   0x25   %    Percent sign
046  38   0x26   &       Ampersand
047  39   0x27   '    Apostrophe
050  40   0x28   (    Left parenthesis
051  41   0x29   )    Right parenthesis
052  42   0x2A   *    Asterisk
053  43   0x2B   +    Plus sign
054  44   0x2C   ,    Comma
055  45   0x2D   -    Hyphen (minus sign)
056  46   0x2E   .    Period
057  47   0x2F   /    Virgule (slash)
060  48   0x30   0
061  49   0x31   1
062  50   0x32   2
063  51   0x33   3
064  52   0x34   4
065  53   0x35   5
066  54   0x36   6
067  55   0x37   7
070  56   0x38   8
071  57   0x39   9
072  58   0x3A   :    Colon
073  59   0x3B   ;    Semicolon
074  60   0x3C   < Less-than symbol (left angle bracket)
075  61   0x3D   =    Equal sign
076  62   0x3E   > Greater-than symbol (right angle bracket)
077  63   0x3F   ?    Question mark
0100 64   0x40   @    At sign
0101 65   0x41   A
0102 66   0x42   B
0103 67   0x43   C
0104 68   0x44   D
0105 69   0x45   E
0106 70   0x46   F
0107 71   0x47   G
0110 72   0x48   H
0111 73   0x49   I
0112 74   0x4A   J
0113 75   0x4B   K
0114 76   0x4C   L
0115 77   0x4D   M
0116 78   0x4E   N
0117 79   0x4F   O
0120 80   0x50   P
0121 81   0x51   Q
0122 82   0x52   R
0123 83   0x53   S
0124 84   0x54   T
0125 85   0x55   U
0126 86   0x56   V
0127 87   0x57   W
0130 88   0x58   X
0131 89   0x59   Y
0132 90   0x5A   Z
0133 91   0x5B   [    Left bracket (left square bracket)
0134 92   0x5C   \    Backslash
0135 93   0x5D   ]    Right bracket (right square bracket)
0136 94   0x5E   ^    Circumflex
0137 95   0x5F   _    Underscore
0140 96   0x60   `    Grave
0141 97   0x61   a
0142 98   0x62   b
0143 99   0x63   c
0144 100  0x64   d
0145 101  0x65   e
0146 102  0x66   f
0147 103  0x67   g
0150 104  0x68   h
0151 105  0x69   i
0152 106  0x6A   j
0153 107  0x6B   k
0154 108  0x6C   l
0155 109  0x6D   m
0156 110  0x6E   n
0157 111  0x6F   o
0160 112  0x70   p
0161 113  0x71   q
0162 114  0x72   r
0163 115  0x73   s
0164 116  0x74   t
0165 117  0x75   u
0166 118  0x76   v
0167 119  0x77   w
0170 120  0x78   x
0171 121  0x79   y
0172 122  0x7A   z
0173 123  0x7B   {    Left brace (left curly bracket)
0174 124  0x7C   |    Vertical bar
0175 125  0x7D   }    Right brace (right curly bracket)
0176 126  0x7E   ~    Tilde
0177 127  0x7F   DEL  <ctrl-> Delete

Files

/usr/pub/ascii

See Also

Latin 1,
Programming COHERENT

© 2012 by Stephen A. Ness