控制字元(Control Characters)
Char |
Octal |
Dec |
Hex |
Control-Key |
Description |
NUL |
0 |
0 |
0 |
^@ |
Null character |
SOH | 1 |
1 |
1 |
^A |
Start of heading, = console interrupt |
STX |
2 |
2 |
2 |
^B |
Start of text, maintenance mode on HP console |
ETX |
3 |
3 |
3 |
^C |
End of text |
EOT |
4 |
4 |
4 |
^D |
End of transmission, not the same as ETB |
ENQ |
5 |
5 |
5 |
^E |
Enquiry, goes with ACK; old HP flow control |
ACK |
6 |
6 |
6 |
^F |
Acknowledge, clears ENQ logon hand |
BEL |
7 |
7 |
7 |
^G |
Bell, rings the bell... |
BS |
10 |
8 |
8 |
^H |
Backspace, works on HP terminals/computers |
HT |
11 |
9 |
9 |
^I |
Horizontal tab, move to next tab stop |
LF |
12 |
10 |
a |
^J |
Line Feed |
VT |
13 |
11 |
b |
^K |
Vertical tab |
FF |
14 |
12 |
c |
^L |
Form Feed, page eject |
CR |
15 |
13 |
d |
^M |
Carriage Return |
SO |
16 |
14 |
e |
^N |
Shift Out, alternate character set |
SI |
17 |
15 |
f |
^O |
Shift In, resume defaultn character set |
DLE | 20 |
16 |
10 |
^P |
Data link escape |
DC1 |
21 |
17 |
11 |
^Q |
XON, with XOFF to pause listings; ":okay to send". |
DC2 |
22 |
18 |
12 |
^R |
Device control 2, block-mode flow control |
DC3 |
23 |
19 |
13 |
^S |
XOFF, with XON is TERM=18 flow control |
DC4 |
24 |
20 |
14 |
^T |
Device control 4 |
NAK |
25 |
21 |
15 |
^U |
Negative acknowledge |
SYN |
26 |
22 |
16 |
^V |
Synchronous idle |
ETB |
27 |
23 |
17 |
^W |
End transmission block, not the same as EOT |
CAN |
30 |
24 |
17 |
^X |
Cancel line, MPE echoes !!! |
EM |
31 |
25 |
19 |
^Y |
End of medium, Control-Y interrupt |
SUB |
32 |
26 |
1a |
^Z |
Substitute |
ESC |
33 |
27 |
1b |
^[ |
Escape, next character is not echoed |
FS |
34 |
28 |
1c |
^\ |
File separator |
GS |
35 |
29 |
1d |
^] |
Group separator |
RS |
36 |
30 |
1e |
^^ |
Record separator, block-mode terminator |
US | 37 |
31 |
1f |
^_ |
Unit separator |
Char |
Octal |
Dec |
Hex |
Control-Key |
Description |
SP |
40 |
32 |
20 |
Space | |
! |
41 |
33 |
21 |
Exclamation mark | |
" |
42 |
34 |
22 |
Quotation mark (" in HTML) | |
# | 43 |
35 |
23 |
Cross hatch (number sign) | |
$ |
44 |
36 |
24 |
Dollar sign | |
% |
45 |
37 |
25 |
Percent sign | |
& |
46 |
38 |
26 |
Ampersand | |
` |
47 |
39 |
27 |
Closing single quote (apostrophe) | |
( |
50 |
40 |
28 |
Opening parentheses | |
) |
51 |
41 |
29 |
Closing parentheses | |
* |
52 |
42 |
2a |
Asterisk (star, multiply) | |
+ |
53 |
43 |
2b |
Plus | |
, |
54 |
44 |
2c |
Comma | |
- |
55 |
45 |
2d |
Hyphen, dash, minus | |
. |
56 |
46 |
2e |
Period | |
/ |
57 |
47 |
2f |
Slant (forward slash, divide) | |
0 |
60 |
48 |
30 |
Zero | |
1 |
61 |
49 |
31 |
One | |
2 |
62 |
50 |
32 |
Two | |
3 |
63 |
51 |
33 |
Three | |
4 |
64 |
52 |
34 |
Four | |
5 |
65 | 53 |
35 |
Five | |
6 |
66 |
54 |
36 |
Six | |
7 |
67 |
55 |
37 |
Seven | |
8 |
70 |
56 |
38 |
Eight | |
9 |
71 |
57 |
39 |
Nine | |
: |
72 |
58 |
3a |
Colon | |
; |
73 |
59 |
3b | Semicolon | |
< |
74 |
60 |
3c |
Less than sign (< in HTML) | |
= |
75 |
61 |
3d |
Equals sign | |
> |
76 |
62 |
3e |
Greater than sign (> in HTML) | |
? |
77 |
63 |
3f |
Question mark | |
@ |
100 |
64 |
40 |
At-sign | |
A |
101 |
65 | 41 |
Uppercase A | |
B |
102 |
66 |
42 |
Uppercase B | |
C |
103 |
67 |
43 |
Uppercase C | |
D |
104 |
68 |
44 |
Uppercase D | |
E |
105 |
69 |
45 |
Uppercase E | |
F |
106 |
70 |
46 |
Uppercase F | |
G |
107 |
71 | 47 |
Uppercase G | |
H |
110 |
72 |
48 |
Uppercase H | |
I |
111 |
73 |
49 |
Uppercase I | |
J |
112 |
74 |
4a |
Uppercase J | |
K |
113 |
75 |
4b |
Uppercase K | |
L |
114 |
76 |
4c |
Uppercase L | |
M |
115 |
77 | 4d |
Uppercase M | |
N |
116 |
78 |
4e |
Uppercase N | |
O |
117 |
79 |
4f |
Uppercase O | |
P |
120 |
80 |
50 |
Uppercase P | |
Q |
121 |
81 |
51 |
Uppercase Q | |
R |
122 |
82 |
52 |
Uppercase R | |
S |
123 |
83 | 53 |
Uppercase S | |
T |
124 |
84 |
54 |
Uppercase T | |
U |
125 |
85 |
55 |
Uppercase U | |
V |
126 |
86 |
56 |
Uppercase V | |
W |
127 |
87 |
57 |
Uppercase W | |
X |
130 |
88 |
58 |
Uppercase X | |
Y |
131 |
89 | 59 |
Uppercase Y | |
Z |
132 |
90 |
5a |
Uppercase Z | |
[ |
133 |
91 |
5b |
Opening square bracket | |
\ |
134 |
92 |
5c |
Reverse slant (Backslash) | |
] |
135 |
93 |
5d |
Closing square bracket | |
^ |
136 |
94 |
5e |
Caret (Circumflex) | |
_ | 137 |
95 |
5f |
Underscore | |
` |
140 |
96 |
60 |
Opening single quote | |
a |
141 |
97 |
61 |
Lowercase a | |
b |
142 |
98 |
62 |
Lowercase b | |
c |
143 |
99 |
63 |
Lowercase c | |
d |
144 |
100 |
64 |
Lowercase d | |
e | 145 |
101 |
65 |
Lowercase e | |
f |
146 |
102 |
66 |
Lowercase f | |
g |
147 |
103 |
67 |
Lowercase g | |
h |
150 |
104 |
68 |
Lowercase h | |
i |
151 |
105 |
69 |
Lowercase i | |
j |
152 |
106 |
6a |
Lowercase j | |
k | 153 |
107 |
6b |
Lowercase k | |
l |
154 |
108 |
6c |
Lowercase l | |
m |
155 |
109 |
6d |
Lowercase m | |
n |
156 |
110 |
6e |
Lowercase n | |
o |
157 |
111 |
6f |
Lowercase o | |
p |
160 |
112 |
70 |
Lowercase p | |
q | 161 |
113 |
71 |
Lowercase q | |
r |
162 |
114 |
72 |
Lowercase r | |
s |
163 |
115 |
73 |
Lowercase s | |
t |
164 |
116 |
74 |
Lowercase t | |
u |
165 |
117 |
75 |
Lowercase u | |
v |
166 |
118 |
76 |
Lowercase v | |
w | 167 |
119 |
77 |
Lowercase w | |
x |
170 |
120 |
78 |
Lowercase x | |
y |
171 |
121 |
79 |
Lowercase y | |
z |
172 |
122 |
7a |
Lowercase z | |
{ |
173 |
123 |
7b |
Opening curly brace | |
| |
174 |
124 |
7c |
Vertical line | |
} |
175 |
125 |
7d |
Cloing curly brace | |
~ |
176 |
126 |
7e |
Tilde (approximate) | |
DEL |
177 |
127 |
7f |
Delete (rubout), cross-hatch box |
Control codes - converting to ASCII, hex or decimal Ascii Table - ASCII character codes and html, octal, hex and decimal chart conversion