ASCII ，它的全称是"美国信息交换标准代码"。它设计于60年代早期，是计算机和诸如打印机、磁带驱动器之类的硬件设备的标准字符集。
ASCII 是 7 比特字符集，包含了 128 个不同的字符值。
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ASCII可印刷字符
|
字符 |
ASCII 码（十进制） |
ASCII 码（十六进制） |
|
|
032 |
20 |
|
! |
033 |
21 |
|
" |
034 |
22 |
|
# |
035 |
23 |
|
$ |
036 |
24 |
|
% |
037 |
25 |
|
& |
038 |
26 |
|
' |
039 |
27 |
|
( |
040 |
28 |
|
) |
041 |
29 |
|
* |
042 |
2A |
|
+ |
043 |
2B |
|
, |
044 |
2C |
|
- |
045 |
2D |
|
. |
046 |
2E |
|
/ |
047 |
2F |
|
0 |
048 |
30 |
|
1 |
049 |
31 |
|
2 |
050 |
32 |
|
3 |
051 |
33 |
|
4 |
052 |
34 |
|
5 |
053 |
35 |
|
6 |
054 |
36 |
|
7 |
055 |
37 |
|
8 |
056 |
38 |
|
9 |
057 |
39 |
|
: |
058 |
3A |
|
; |
059 |
3B |
|
< |
060 |
3C |
|
= |
061 |
3D |
|
> |
062 |
3E |
|
? |
063 |
3F |
|
@ |
064 |
40 |
|
A |
065 |
41 |
|
B |
066 |
42 |
|
C |
067 |
43 |
|
D |
068 |
44 |
|
E |
069 |
45 |
|
F |
070 |
46 |
|
G |
071 |
47 |
|
H |
072 |
48 |
|
I |
073 |
49 |
|
J |
074 |
4A |
|
K |
075 |
4B |
|
L |
076 |
4C |
|
M |
077 |
4D |
|
N |
078 |
4E |
|
O |
079 |
4F |
|
P |
080 |
50 |
|
Q |
081 |
51 |
|
R |
082 |
52 |
|
S |
083 |
53 |
|
T |
084 |
54 |
|
U |
085 |
55 |
|
V |
086 |
56 |
|
W |
087 |
57 |
|
X |
088 |
58 |
|
Y |
089 |
59 |
|
Z |
090 |
5A |
|
[ |
091 |
5B |
|
|
092 |
5C |
|
] |
093 |
5D |
|
^ |
094 |
5E |
|
_ |
095 |
5F |
|
` |
096 |
60 |
|
a |
097 |
61 |
|
b |
098 |
62 |
|
c |
099 |
63 |
|
d |
100 |
64 |
|
e |
101 |
65 |
|
f |
102 |
66 |
|
g |
103 |
67 |
|
h |
104 |
68 |
|
i |
105 |
69 |
|
j |
106 |
6A |
|
k |
107 |
6B |
|
l |
108 |
6C |
|
m |
109 |
6D |
|
n |
110 |
6E |
|
o |
111 |
6F |
|
p |
112 |
70 |
|
q |
113 |
71 |
|
r |
114 |
72 |
|
s |
115 |
73 |
|
t |
116 |
74 |
|
u |
117 |
75 |
|
v |
118 |
76 |
|
w |
119 |
77 |
|
x |
120 |
78 |
|
y |
121 |
79 |
|
z |
122 |
7A |
|
{ |
123 |
7B |
|
| |
124 |
7C |
|
} |
125 |
7D |
|
~ |
126 |
7E |
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ASCII设备控制字符
|
字符 |
ASCII 码（十进制） |
ASCII 码（十六进制） |
描述 |
|
NUL |
00 |
00 |
null character |
|
SOH |
01 |
01 |
start of header |
|
STX |
02 |
02 |
start of text |
|
ETX |
03 |
03 |
end of text |
|
EOT |
04 |
04 |
end of transmission |
|
ENQ |
05 |
05 |
enquiry |
|
ACK |
06 |
06 |
acknowledge |
|
BEL |
07 |
07 |
bell (ring) |
|
BS |
08 |
08 |
backspace |
|
HT |
09 |
09 |
horizontal tab |
|
LF |
10 |
0A |
line feed |
|
VT |
11 |
0B |
vertical tab |
|
FF |
12 |
0C |
form feed |
|
CR |
13 |
0D |
carriage return |
|
SO |
14 |
0E |
shift out |
|
SI |
15 |
0F |
shift in |
|
DLE |
16 |
10 |
data link escape |
|
DC1 |
17 |
11 |
device control 1 |
|
DC2 |
18 |
12 |
device control 2 |
|
DC3 |
19 |
13 |
device control 3 |
|
DC4 |
20 |
14 |
device control 4 |
|
NAK |
21 |
15 |
negative acknowledge |
|
SYN |
22 |
16 |
synchronize |
|
ETB |
23 |
17 |
end transmission block |
|
CAN |
24 |
18 |
cancel |
|
EM |
25 |
19 |
end of medium |
|
SUB |
26 |
1A |
substitute |
|
ESC |
27 |
1B |
escape |
|
FS |
28 |
1C |
file separator |
|
GS |
29 |
1D |
group separator |
|
RS |
30 |
1E |
record separator |
|
US |
31 |
1F |
unit separator |
|
DEL |
127 |
7F |
delete (rubout) |