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.

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