ASCII

The ASCII (American Standard Code for Information Interchange) set is used by most computers as a way of processing data. By the use of a standard code set, computers were able to process data more efficently. Here is the full 128 ASCII set with the additional information of the IBM codepage 437.

ASCII

The first 32 characters of the ASCII code set was used for control characters and not for display. Here is the function of the control codes.

ASCII Control Codes

Value
Code
Description

00
NUL
Null

01
SOH
Start of heading

02
STX
Start of text

03
EXT
End of text

04
EOT
End of tranmission

05
ENQ
Enquiry

06
ACK
Acknowledge

07
BEL
Bell

08
BS
Back Space

09
TAB
Hoizontal Tab

10
LF, NL
Line feed, New line

11
VT
Vertical tab

12
FF, NP
Form feed, New page

13
CR
Carriage return

14
SO
Shift out

15
SI
Shift in

16
DLE
Data link escape

17
DC1
Device control 1

18
DC2
Device control 2

19
DC3
Device control 3

20
DC4
Device control 4

21
NAK
Negative acknowledge

22
SYN
Synchronous idle

23
ETB
End of transmission block

24
CAN
Cancel

25
EM
End of medium

26
SUB
Substitute

27
ESC
Escape

28
FS
File seperator

29
GS
Group seperator

30
RS
Record seperator

31
US
Unit seperator

32
SP
Space

127
DEL
Delete

See Computer Number Systems for more information.