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ASCII is a character-encoding scheme based on the ordering of the English alphabet . The 95 ASCII graphic characters numbered from 0x20 to 0x7E (32 to 126 decimal), also known as the printable characters, represent letters, digits, punctuation marks , and a few miscellaneous symbols. The first 32 ASCII characters, from 0x00 to 0x20, are known as control characters . The space character , that denotes the space between words, as produced by the space-bar of a keyboard, represented by code 0x20 (hexadecimal ), is considered a non-printing graphic (or an invisible graphic) rather than a control character.
Binary
Oct
Dec
Hex
Glyph
010 0000
040
32
20
space
010 0001
041
33
21
!
010 0010
042
34
22
"
010 0011
043
35
23
#
010 0100
044
36
24
$
010 0101
045
37
25
%
010 0110
046
38
26
&
010 0111
047
39
27
'
010 1000
050
40
28
(
010 1001
051
41
29
)
010 1010
052
42
2A
*
010 1011
053
43
2B
+
010 1100
054
44
2C
,
010 1101
055
45
2D
-
010 1110
056
46
2E
.
010 1111
057
47
2F
/
011 0000
060
48
30
0
011 0001
061
49
31
1
011 0010
062
50
32
2
011 0011
063
51
33
3
011 0100
064
52
34
4
011 0101
065
53
35
5
011 0110
066
54
36
6
011 0111
067
55
37
7
011 1000
070
56
38
8
011 1001
071
57
39
9
011 1010
072
58
3A
:
011 1011
073
59
3B
;
011 1100
074
60
3C
<
011 1101
075
61
3D
=
011 1110
076
62
3E
>
011 1111
077
63
3F
?
Binary
Oct
Dec
Hex
Glyph
100 0000
100
64
40
@
100 0001
101
65
41
A
100 0010
102
66
42
B
100 0011
103
67
43
C
100 0100
104
68
44
D
100 0101
105
69
45
E
100 0110
106
70
46
F
100 0111
107
71
47
G
100 1000
110
72
48
H
100 1001
111
73
49
I
100 1010
112
74
4A
J
100 1011
113
75
4B
K
100 1100
114
76
4C
L
100 1101
115
77
4D
M
100 1110
116
78
4E
N
100 1111
117
79
4F
O
101 0000
120
80
50
P
101 0001
121
81
51
Q
101 0010
122
82
52
R
101 0011
123
83
53
S
101 0100
124
84
54
T
101 0101
125
85
55
U
101 0110
126
86
56
V
101 0111
127
87
57
W
101 1000
130
88
58
X
101 1001
131
89
59
Y
101 1010
132
90
5A
Z
101 1011
133
91
5B
[
101 1100
134
92
5C
\
101 1101
135
93
5D
]
101 1110
136
94
5E
^
101 1111
137
95
5F
_
Binary
Oct
Dec
Hex
Glyph
110 0000
140
96
60
`
110 0001
141
97
61
a
110 0010
142
98
62
b
110 0011
143
99
63
c
110 0100
144
100
64
d
110 0101
145
101
65
e
110 0110
146
102
66
f
110 0111
147
103
67
g
110 1000
150
104
68
h
110 1001
151
105
69
i
110 1010
152
106
6A
j
110 1011
153
107
6B
k
110 1100
154
108
6C
l
110 1101
155
109
6D
m
110 1110
156
110
6E
n
110 1111
157
111
6F
o
111 0000
160
112
70
p
111 0001
161
113
71
q
111 0010
162
114
72
r
111 0011
163
115
73
s
111 0100
164
116
74
t
111 0101
165
117
75
u
111 0110
166
118
76
v
111 0111
167
119
77
w
111 1000
170
120
78
x
111 1001
171
121
79
y
111 1010
172
122
7A
z
111 1011
173
123
7B
{
111 1100
174
124
7C
|
111 1101
175
125
7D
}
111 1110
176
126
7E
~