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Delete character

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In computing, the delete character (sometimes also called rubout) is the last character in the repertoire, with the code 127 (). definition of the rubout character 7F hex Not a graphic character but a control character, it is denoted as ^? in and has a graphic representation of ␡ in (as all ASCII control characters have graphic representations).

On modern systems terminal emulators typically turn keys marked "Delete" or "Del" into an escape sequence such as ^Backspace}} key or + or + are typed, and some programs such as [[Microsoft Notepad|Notepad may insert this character with the same key presses.

   [[NUL>null character]]
[[CR>carriage return]]
[[LF>line feed]]
"Delete" along with some other ASCII control characters and space as they appear on punched tape
This code was originally used to mark deleted characters on , since any character could be changed to all ones by punching holes everywhere. If a character was punched erroneously, punching out all seven bits caused this position to be ignored or deleted, a computer version of .
(2019). 9780132542883, Pearson Education. .
In , this is 7F to rubout 7 bits, and . For teleprinters like the Teletype Model 33, lines were commonly ended by the three characters , , and rubout, with the rubout allowing time for the print mechanism to physically move to the left margin. On VT100 compatible terminals, this is the character generated by the key labeled Delete, which transmits a delete character (octal 177, hexadecimal 7F) to the host system. On VT510 compatible terminals, this is the character generated by the key labeled ?, usually called backspace on modern machines, and does not correspond to the PC "Delete" key.

Current use
operating systems are known to use it as control character, i.e. to delete the previous character in the . This, though, differs from its original function where this code replaced (physically) characters on a punched tape to be deleted.

/Windows never used this character in any way, using the (0x08, or control-H) to delete the previous character. EGA/VGA fonts, as fonts used by Win32 console, usually have the "house" symbol ⌂ at 127 (0x7F) code point, see Code page 437 for details. However, its legacy can be seen in some applications distributed as part of the Windows operating system: as an example, typing the and key combination in Microsoft Notepad will output the delete character.

See also

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