This appendix lists the ASCII codes 0 through 127, the characters they represent and the keystrokes that generate them.
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|
Value |
Char |
Key |
Value |
Char |
Key |
Value |
Char |
Key |
|---|---|---|---|---|---|---|---|---|
|
0 |
NUL |
None |
43 |
+ |
+ |
86 |
V |
V |
|
1 |
SOH |
ctrl-a |
44 |
, |
, |
87 |
W |
W |
|
2 |
STX |
ctrl-b |
45 |
- |
- |
88 |
X |
X |
|
3 |
ETX |
ctrl-c |
46 |
. |
. |
89 |
Y |
Y |
|
4 |
EOT |
ctrl-d |
47 |
/ |
/ |
90 |
Z |
Z |
|
5 |
ENQ |
ctrl-e |
48 |
0 |
0 |
91 |
[ |
[ |
|
6 |
ACK |
ctrl-f |
49 |
1 |
1 |
92 |
\ |
\ |
|
7 |
BEL |
ctrl-g |
50 |
2 |
2 |
93 |
] |
] |
|
8 |
BS |
ctrl-h |
51 |
3 |
3 |
94 |
^ |
^ |
|
9 |
HT |
ctrl-i |
52 |
4 |
4 |
95 |
_ |
_ |
|
10 |
LF |
ctrl-j |
53 |
5 |
5 |
96 |
` |
` |
|
11 |
VT |
ctrl-k |
54 |
6 |
6 |
97 |
a |
a |
|
12 |
FF |
ctrl-l |
55 |
7 |
7 |
98 |
b |
b |
|
13 |
CR |
ctrl-m |
56 |
8 |
8 |
99 |
c |
c |
|
14 |
SO |
ctrl-n |
57 |
9 |
9 |
100 |
d |
d |
|
15 |
SI |
ctrl-o |
58 |
: |
: |
101 |
e |
e |
|
16 |
DLE |
ctrl-p |
59 |
; |
; |
102 |
f |
f |
|
17 |
DC1 |
ctrl-q |
60 |
< |
< |
103 |
g |
g |
|
18 |
DC2 |
ctrl-r |
61 |
= |
= |
104 |
h |
h |
|
19 |
DC3 |
ctrl-s |
62 |
> |
> |
105 |
i |
i |
|
20 |
DC4 |
ctrl-t |
63 |
? |
? |
106 |
j |
j |
|
21 |
NAK |
ctrl-u |
64 |
@ |
@ |
107 |
k |
k |
|
22 |
SYN |
ctrl-v |
65 |
A |
A |
108 |
l |
l |
|
23 |
ETB |
ctrl-w |
66 |
B |
B |
109 |
m |
m |
|
24 |
CAN |
ctrl-x |
67 |
C |
C |
110 |
n |
n |
|
25 |
EM |
ctrl-y |
68 |
D |
D |
111 |
o |
o |
|
26 |
SUB |
ctrl-z |
69 |
E |
E |
112 |
p |
p |
|
27 |
ESC |
esc |
70 |
F |
F |
113 |
q |
q |
|
28 |
FS |
ctrl-\ |
71 |
G |
G |
114 |
r |
r |
|
29 |
GS |
ctrl-] |
72 |
H |
H |
115 |
s |
s |
|
30 |
RS |
none |
73 |
I |
I |
116 |
t |
t |
|
31 |
US |
none |
74 |
J |
J |
117 |
u |
u |
|
32 |
SPACE |
space |
75 |
K |
K |
118 |
v |
v |
|
33 |
! |
! |
76 |
L |
L |
119 |
w |
w |
|
34 |
" |
" |
77 |
M |
M |
120 |
x |
x |
|
35 |
# |
# |
78 |
N |
N |
121 |
y |
y |
|
36 |
$ |
$ |
79 |
O |
O |
122 |
z |
z |
|
37 |
% |
% |
80 |
P |
P |
123 |
{ |
( |
|
38 |
& |
& |
81 |
Q |
Q |
124 |
| |
| |
|
39 |
' |
' |
82 |
R |
R |
125 |
} |
) |
|
40 |
( |
( |
83 |
S |
S |
126 |
~ |
~ |
|
41 |
) |
) |
84 |
T |
T |
127 |
DEL |
backspace |
|
42 |
* |
* |
85 |
U |
U |
|
|
|
In the following table, the unprintable ASCII characters are listed along with their meaning. Many of these unprintable characters serve different functions that vary from one operating system to another.
|
Unprintable character |
Meaning |
|---|---|
|
NUL |
Null character |
|
SOH |
Start of header |
|
STX |
Start of text |
|
ETX |
End of text |
|
EOT |
End of transmission |
|
ENQ |
Enquiry |
|
ACK |
Acknowledge |
|
BEL |
Bell character |
|
BS |
Back space |
|
HT |
Horizontal tab |
|
LF |
Line feed |
|
VT |
Vertical tab |
|
FF |
Form feed |
|
CR |
Carriage return |
|
SO |
Shift out |
|
SI |
Shift in |
|
DLE |
Data link escape |
|
DC1 |
Device control one (resume transmission) |
|
DC2 |
Device control two |
|
DC3 |
Device control three (stop transmission) |
|
DC4 |
Device control four |
|
NAK |
Negative acknowledge |
|
SYN |
Synchronous idle |
|
ETB |
End of transmitted block |
|
CAN |
Cancel |
|
EM |
End of medium |
|
SUB |
Substitute |
|
ESC |
Escape |
|
FS |
File separator |
|
GS |
Group separator |
|
RS |
Record separator |
|
US |
Unit separator |
|
DEL |
Delete |