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ASCII Character Chart

The ASCII character set defines 128 characters (0 to 127 decimal, 0 to FF hexadecimal, and 0 to 177 octal). This character set is a subset of many other character sets with 256 characters, including the ANSI character set of MS Windows, the Roman-8 character set of HP systems, and the IBM PC Extended Character Set of DOS, and the ISO Latin-1 character set used by Web browsers. They are not the same as the EBCDIC character set used on IBM mainframes.

The Control Characters

The first 32 values are non-printing control characters, such as Return and Line feed. You generate these characters on the keyboard by holding down the Control key while you strike another key. For example, Bell is value 7, Control plus G, often shown in documents as ^G. Notice that 7 is 64 less than the value of G (71); the Control key subtracts 64 from the value of the keys that it modifies.

 

Decimal Octal Hex Character Control-Key Control Action
0 0 0 NUL ^@ Null character
1 1 1 SOH ^A Start of heading, = console interrupt
2 2 2 STX ^B Start of text, maintenance mode on HP console
3 3 3 ETX ^C End of text
4 4 4 EOT ^D End of transmission, not the same as ETB
5 5 5 ENQ ^E Enquiry, goes with ACK; old HP flow control
6 6 6 ACK ^F Acknowledge, clears ENQ logon hand
7 7 7 BEL ^G Bell, rings the bell...
8 10 8 BS ^H Backspace, works on HP terminals/computers
9 11 9 HT ^I Horizontal tab, move to next tab stop
10 12 a LF ^J Line Feed
11 13 b VT ^K Vertical tab
12 14 c FF ^L Form Feed, page eject
13 15 d CR ^M Carriage Return
14 16 e SO ^N Shift Out, alternate character set
15 17 f SI ^O Shift In, resume default character set
16 20 10 DLE ^P Data link escape
17 21 11 DC1 ^Q XON, with XOFF to pause listings; ":okay to send".
18 22 12 DC2 ^R Device control 2, block-mode flow control
19 23 13 DC3 ^S XOFF, with XON is TERM=18 flow control
20 24 14 DC4 ^T Device control 4
21 25 15 NAK ^U Negative acknowledge
22 26 16 SYN ^V Synchronous idle
23 27 17 ETB ^W End transmission block, not the same as EOT
24 30 17 CAN ^X Cancel line, MPE echoes !!!
25 31 19 EM ^Y End of medium, Control-Y interrupt
26 32 1a SUB ^Z Substitute
27 33 1b ESC ^[ Escape, next character is not echoed
28 34 1c FS ^\ File separator
29 35 1d GS ^] Group separator
30 36 1e RS ^^ Record separator, block-mode terminator
31 37 1f US ^_ Unit separator

 

 

Printing Characters

 

Decimal Octal Hex Character Description
32 40 20 SP Space
33 41 21 ! Exclamation mark
34 42 22 " Quotation mark (" in HTML)
35 43 23 # Cross hatch (number sign)
36 44 24 $ Dollar sign
37 45 25 % Percent sign
38 46 26 & Ampersand
39 47 27 ` Closing single quote (apostrophe)
40 50 28 ( Opening parentheses
41 51 29 ) Closing parentheses
42 52 2a * Asterisk (star, multiply)
43 53 2b + Plus
44 54 2c , Comma
45 55 2d - Hyphen, dash, minus
46 56 2e . Period
47 57 2f / Slant (forward slash, divide)
48 60 30 0 Zero
49 61 31 1 One
50 62 32 2 Two
51 63 33 3 Three
52 64 34 4 Four
53 65 35 5 Five
54 66 36 6 Six
55 67 37 7 Seven
56 70 38 8 Eight
57 71 39 9 Nine
58 72 3a : Colon
59 73 3b ; Semicolon
60 74 3c < Less than sign (&lt; in HTML)
61 75 3d = Equals sign
62 76 3e > Greater than sign (&gt; in HTML)
63 77 3f ? Question mark
64 100 40 @ At-sign
65 101 41 A Uppercase A
66 102 42 B Uppercase B
67 103 43 C Uppercase C
68 104 44 D Uppercase D
69 105 45 E Uppercase E
70 106 46 F Uppercase F
71 107 47 G Uppercase G
72 110 48 H Uppercase H
73 111 49 I Uppercase I
74 112 4a J Uppercase J
75 113 4b K Uppercase K
76 114 4c L Uppercase L
77 115 4d M Uppercase M
78 116 4e N Uppercase N
79 117 4f O Uppercase O
80 120 50 P Uppercase P
81 121 51 Q Uppercase Q
82 122 52 R Uppercase R
83 123 53 S Uppercase S
84 124 54 T Uppercase T
85 125 55 U Uppercase U
86 126 56 V Uppercase V
87 127 57 W Uppercase W
88 130 58 X Uppercase X
89 131 59 Y Uppercase Y
90 132 5a Z Uppercase Z
91 133 5b [ Opening square bracket
92 134 5c \ Reverse slant (Backslash)
93 135 5d ] Closing square bracket
94 136 5e ^ Caret (Circumflex)
95 137 5f _ Underscore
96 140 60 ` Opening single quote
97 141 61 a Lowercase a
98 142 62 b Lowercase b
99 143 63 c Lowercase c
100 144 64 d Lowercase d
101 145 65 e Lowercase e
102 146 66 f Lowercase f
103 147 67 g Lowercase g
104 150 68 h Lowercase h
105 151 69 i Lowercase i
106 152 6a j Lowercase j
107 153 6b k Lowercase k
108 154 6c l Lowercase l
109 155 6d m Lowercase m
110 156 6e n Lowercase n
111 157 6f o Lowercase o
112 160 70 p Lowercase p
113 161 71 q Lowercase q
114 162 72 r Lowercase r
115 163 73 s Lowercase s
116 164 74 t Lowercase t
117 165 75 u Lowercase u
118 166 76 v Lowercase v
119 167 77 w Lowercase w
120 170 78 x Lowercase x
121 171 79 y Lowercase y
122 172 7a z Lowercase z
123 173 7b { Opening curly brace
124 174 7c | Vertical line
125 175 7d } Closing curly brace
126 176 7e ~ Tilde (approximate)
127 177 7f DEL Delete (rubout), cross-hatch box

 

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