Talk:Control character

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Merge control character with non-printing character?[edit]

Control characters are non-printable characters but is the reverse true? Historically control characters were the first 32 ASCII characters, back when teletypes were all upper case, IIRC. (Or did we just always lock the shift key down? I don't think so.) Then characters like DEL came along that could not be generated with the control key, not to mention modern unicode characters like Zero-Width Non-Joiner. (For the record I don't recall if the old teletypes all had a control key.) Although these new characters cannot be made by using the control key, they certainly control the receiving device. Certainly in common usage all the non-printing ASCII characters are control characters. I can't say about the newer unicode characters. --Kop 18:59, 29 Aug 2004 (UTC)

Teletype Corp's ASR series all used ASCII (IIRC), with or without an actual lower case, and so DEL was an original builtin ASR character. Many of these machines came with a paper tape reader/punch, so DEL couls actually serve its original ordained meaning. As for non-printing ASCII characters being all controls, there are DEL (not in the control range) and SP (also not in the control range) both of which don't print. For that matter the national usuage characters, might in some national usage, not print either. These things, even simple old ASCII, are not so transparent in their meanings and relations and implications. ww 08:17, 10 November 2005 (UTC)
DEL was commonly Ctrl-/ , and it's shown in the article --A194 44 217 5 (talk) 19:33, 11 May 2010 (UTC)

missing example[edit]

this somehow duplicates stuff from ASCII code#ASCII control characters, but I miss here the "sucker^H^H^H^H^H^H customer" example. MFH: Talk 00:23, 25 May 2005 (UTC)

examples at beginning[edit]

I think the examples at the beginning (SYN, ) are not very representative, LF, CR, TAB, NUL would be much more common. B.t.w., NUL would deserve a further study. — MFH:Talk 14:20, 13 March 2006 (UTC)

BEL[edit]

Is its escape sequence \g or \a ? If I remember correctly, despite the key combination being Ctrl+G, the escape sequence itself is \a (alert)...Medinoc (talk) 08:46, 10 September 2008 (UTC)

  • After consulting the n1256 ISO/IEC 9899:TC3 document, I can confirm it's \a.Medinoc (talk) 08:48, 10 September 2008 (UTC)
  • We really need to label those escape sequences somehow anyway. Ultimately the codes are not related to the control characters themselves, but to C. CrispMuncher (talk) 21:28, 10 September 2008 (UTC)

ANSI X.64 and VT100[edit]

I've snipped a statement that the ANSI X.64 standard is based on the VT100 terminal - it is the other way around. The VT100 manual is up online at http://vt100.net/docs/vt100-ug/ which clearly states this. I also removed the year of the standard because this reference gives the date as 1977 not 1979. I'm not sure if 1979 was plain wrong or if there was a revised version. CrispMuncher (talk) 19:32, 15 September 2008 (UTC)

wiki formatting: caret notation[edit]

This is not the right place, but how to write a caret notation in italic. — Preceding unsigned comment added by 2A02:8422:1191:6E00:56E6:FCFF:FEDB:2BBA (talk) 20:17, 27 February 2013 (UTC)

Link to dab page[edit]

I have removed the link to a dab page not sure of the reason it was re added. Mo ainm~Talk 15:04, 3 October 2013 (UTC)