ASCII - X3.4-1963

American Standard Code for Information Interchange
approved by the American Standards Association, Incorporated

main computer information


Newline sequence: 0D 0A (CR LF)

hexadecimal
--00--
--10--
--20--
--30--
--40--
--50--
--60--
--70--
0
NULL DC0 SP
0
@
P
(U) (U)
1
SOM DC1
!
1
A
Q
(U) (U)
2
EOA DC2
"
2
B
R
(U) (U)
3
EOM DC3
#
3
C
S
(U) (U)
4
EOT DC4
$
4
D
T
(U) (U)
5
WRU ERR
%
5
E
U
(U) (U)
6
RU SYNC
&
6
F
V
(U) (U)
7
BELL LEM
'
7
G
W
(U) (U)
8
FE0 S0
(
8
H
X
(U) (U)
9
HT / SK S1
)
9
I
Y
(U) (U)
A
LF S2
*
:
J
Z
(U) (U)
B
VTAB S3
+
;
K
[
(U) (U)
C
FF S4
,
<
L
\
(U) ACK
D
CR S5
-
=
M
]
(U) (1)
E
SO S6
.
>
N
(U) ESC
F
SI S7
/
?
O
(U) DEL

Legend
  light blue background indicates a control character
  normal colored background indicates a glyph (printable) character
NULL Null/idle
SOM Start of message
EOA End of Address
EOM End of message
EOT End of transmission
WRU "Who are you?"
RU "Are you...?"
BELL Audible signal
FE0 Format effector
HT Horizontal tabulation
SK Skip (punch card)
LF Line feed
VTAB Vertical tabulation
FF Form feed
CR Carriage return
SO Shift out
SI Shift in
DC0 Device control reserved for data link escape
DC1 - DC3 Device control
DC4 Device control (stop)
ERR Error
SYNC Synchronous idle
LEM Logical end of media
S0 - S7 Separator (information)
SP Word separator (space, normally non-printing)
' Apostrophe
, Comma
< Less than
> Greater than
Up arrow (Exponentiation), Unicode: ↑ (&#8593;)
Left arrow (Implies / Replaced by), Unicode: ← (&#8592;)
\ Reverse slant
(U) Unassigned character
ACK Acknowledge
(1) Unassigned control
ESC Escape
DEL Delete / Idle


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