4.14 ASCII Code List (Reference)
ASCII codes
Most significant 4 bits
0
0
NUL
TC
1
1 TC
(SOH)
DC
1
2
TC
(STX)
DC
2
3
TC
(ETX)
DC
3
4
TC
(EOT)
DC
4
5 TC
(ENQ) TC
5
5
6
TC
(ACK) TC
6
9
7
BEL
TC
10
8
FE
(BS)
CAN
0
9
FE
(HT)
1
A
FE
(LF)
SUB
2
B
FE
(VT)
ESC
3
C
FE
(FF)
IS
4
D
FE
(CR)
IS
5
E
SO
IS
F
SI
IS
Example: Conversion of ASCII code H 3 7 results in 7.
Most significant 4 bits
Least significant 4 bits
1
2
3
4
(DEL) (SP)
0
@
!
1
A
1
"
2
B
2
#
3
C
3
$
4
D
4
(NAK)
%
5
E
(SYN)
&
6
F
(ETB)
'
7
G
(
8
H
EM
)
9
I
*
:
J
+
;
K
(FS)
,
<
L
4
(GS)
-
=
M
3
(RS)
.
>
N
2
(US)
/
?
O
1
: Indicates codes often used.
5
6
7
8
9
P
'
p
Q
a
q
R
b
r
S
c
s
T
d
t
U
e
u
V
f
v
W
g
w
X
h
x
Y
I
y
Z
j
z
[
k
{
\
l
|
]
m
}
^
n
~
_
o
DEL
Most significant
0
0
7
42
COMPUTER LINK FUNCTION
A
B
C
D
E
3
7
F
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