Control Character

In computing and telecommunication, a control character or non-printing character is a code point (a number) in a character set, that does not in itself represent a written symbol. It is in-band signaling in the context of character encoding. All entries in the ASCII table below code 32 (technically the C0 control code set) and 127 are of this kind, including BEL (which is intended to cause an audible signal in the receiving terminal), SYN (which is a synchronization signal), and ENQ (a signal that is intended to trigger a response at the receiving end, to see if it is still present). The Extended Binary Coded Decimal Interchange Code (EBCDIC) character set contains 65 control codes, including all of the ASCII control codes as well as additional codes which are mostly used to control IBM peripherals. Unicode makes a distinction between Control characters (C0 and C1 control codes) versus Formatting characters (such as the Zero-width non-joiner).

Other characters are mainly printing, printable, or graphic characters, except perhaps for the "space" character (see ASCII printable characters).

0x00 0x10
0x00 NUL DLE
0x01 SOH DC1
0x02 STX DC2
0x03 ETX DC3
0x04 EOT DC4
0x05 ENQ NAK
0x06 ACK SYN
0x07 BEL ETB
0x08 BS CAN
0x09 TAB EM
0x0A LF SUB
0x0B VT ESC
0x0C FF FS
0x0D CR GS
0x0E SO RS
0x0F SI US
0x7F DEL

Read more about Control Character:  History, In ASCII, In Unicode, Display, How Control Characters Map To Keyboards, The Design Purpose

Famous quotes containing the words control and/or character:

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