x SuSE Linux 13.1-RELEASE x
x SuSE Linux 13.1-RELEASEx
ascii(7) Miscellaneous Information Manual ascii(7)
NAME
ascii - 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 (e.g., ISO 8859-1) contain ASCII as
their lower half. The international counterpart of ASCII is known as
ISO 646-IRV.
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' (null character) | 100 64 40 @
001 1 01 SOH (start of heading) | 101 65 41 A
002 2 02 STX (start of text) | 102 66 42 B
003 3 03 ETX (end of text) | 103 67 43 C
004 4 04 EOT (end of transmission) | 104 68 44 D
005 5 05 ENQ (enquiry) | 105 69 45 E
006 6 06 ACK (acknowledge) | 106 70 46 F
007 7 07 BEL '\a' (bell) | 107 71 47 G
010 8 08 BS '\b' (backspace) | 110 72 48 H
011 9 09 HT '\t' (horizontal tab) | 111 73 49 I
012 10 0A LF '\n' (new line) | 112 74 4A J
013 11 0B VT '\v' (vertical tab) | 113 75 4B K
014 12 0C FF '\f' (form feed) | 114 76 4C L
015 13 0D CR '\r' (carriage ret) | 115 77 4D M
016 14 0E SO (shift out) | 116 78 4E N
017 15 0F SI (shift in) | 117 79 4F O
020 16 10 DLE (data link escape) | 120 80 50 P
021 17 11 DC1 (device control 1) | 121 81 51 Q
022 18 12 DC2 (device control 2) | 122 82 52 R
023 19 13 DC3 (device control 3) | 123 83 53 S
024 20 14 DC4 (device control 4) | 124 84 54 T
025 21 15 NAK (negative ack.) | 125 85 55 U
026 22 16 SYN (synchronous idle) | 126 86 56 V
027 23 17 ETB (end of trans. blk) | 127 87 57 W
030 24 18 CAN (cancel) | 130 88 58 X
031 25 19 EM (end of medium) | 131 89 59 Y
032 26 1A SUB (substitute) | 132 90 5A Z
033 27 1B ESC (escape) | 133 91 5B [
034 28 1C FS (file separator) | 134 92 5C \ '\\'
035 29 1D GS (group separator) | 135 93 5D ]
036 30 1E RS (record separator) | 136 94 5E ^
037 31 1F US (unit separator) | 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
Tables
For convenience, below are 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
NOTES
History
/etc/ascii (VII) appears in the UNIX Programmer's Manual.
On older terminals, the underscore code is displayed as a left arrow,
called backarrow, the caret is displayed as an up-arrow and the verti-
cal 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-mi-
crocontroller-based electronic keyboard and that pairing was found on
old teletypes.
The ASCII standard was published by the United States of America Stan-
dards Institute (USASI) in 1968.
SEE ALSO
charsets(7), iso_8859-1(7), iso_8859-2(7), iso_8859-3(7),
iso_8859-4(7), iso_8859-5(7), iso_8859-6(7), iso_8859-7(7),
iso_8859-8(7), iso_8859-9(7), iso_8859-10(7), iso_8859-11(7),
iso_8859-13(7), iso_8859-14(7), iso_8859-15(7), iso_8859-16(7),
utf-8(7)
Linux man-pages 6.04 2023-02-05 ascii(7)
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