Talk:Slashed zero

Unicode character?
Does the slashed zero as such have a Unicode character? If so, why not include it in the article? -- Adam78 17:04, 11 November 2005 (UTC)
 * The slashed zero is just a typographic variation of a "regular" zero.  In other words, it depends on the font.
 * Its funny, now that you mention it, Ive never been able to find the slashed 0 in the unicode character set. I was going to ask if this was somebody's stupid joke, writing an article about a character without using it a single time.  If someone could tell me wheres there's a true slashed 0 (not a foreign character like Ø or θ) in unicode, I'd be very interested.  It seems like a strange omission.
 * Hello, did you not read the above or the article? It doesn't show up in unicode, and it's not a separate character, it's just the zero. 172.151.113.138 22:43, 1 November 2006 (UTC)


 * AIUI, Unicode does support the slashed zero, but it treats it literally as "a zero that is slashed" and it is coded as two characters, the commonplace zero and then the "combining long solidus overlay" . These combining characters (commonly, but not completely supported by recent web browsers) overlay the preceding character, so that (in HTML)  gives 0&#x0338; - Andy Dingley (talk) 17:09, 14 February 2008 (UTC)

Oblong not oval
0 is oblong not oval. O is also oblong, just with a shorter mid-section than 0. Elliptical is a round object with 2 focal points. Oval can be elliptical but not necessarily. —The preceding unsigned comment was added by 12.205.48.191 (talk • contribs) 16:40, 25 May 2006.

Current use?
Does anyone think that there should be a bit on the use of the slashed 0 in/on the built-in font on TI calculators, such as the slashed 0 in the TI-83 family and the dotted 0 in most(?) of the Motorola 68k calculators? —The preceding unsigned comment was added by Cogburnd02 (talk • contribs) 21:41, 14 March 2007 (UTC).

The slash
The paragraph said that the slash does not extend past them on the outside of ‘0’, but I think many handwritings do so. - &#9993; Hello World! 15:42, 25 August 2007 (UTC)

Visa Control Number?
Does anybody notice that in the control number of a US visa, you can observe both non-slashed zeros and slashed zeros. What's the purpose of those slashed-zeros? Are they really character "O"s?? —Preceding unsigned comment added by 149.173.6.110 (talk) 19:22, 7 February 2008 (UTC)

ham radio
A usenet thread: has recently claimed that ham radio was using the slashed zero in the '20s and '30s. Anyone have references to back this up? - Andy Dingley (talk) 17:09, 14 February 2008 (UTC)

Bletchley Park
My understanding of the origins of the slashed zero is that it arose from wartime work at BP, Enigma, Colossus, Alan Turing et al. The early telegraphy-derived printers they used, in conjunction with the project-specific coding systems for characters, could print most digits except for "0" and zero instead appeared as a "/". These printouts were then often hand-annotated for ease of reading, leading to a slashed zero that was half printed and half handwritten. Does anyone have references for this? - Andy Dingley (talk) 17:09, 14 February 2008 (UTC)

On cheques?
The article states that "many people slash the zeroes on checks". Is this an exclusively/largely American usage? I don't think I've ever come across a slashed zero on a cheque here in the UK. Not that I use them much any more, but even when I did I don't recall seeing a slashed zero. 86.149.133.230 (talk) 15:11, 5 August 2008 (UTC)
 * "checks" not "cheques", so I suspect this is indeed American. Andy Dingley (talk) 15:59, 5 August 2008 (UTC)

Also, the point doesn't make sense because the numbers are to be written out in words as well. For example, if someone changed a zero in a check for $1,000 to become $1,800, it would still be written out as "one thousand and 00/100 dollars". No one would accept the check if the numerical and written amounts don't match. I suggest removing that info, because it's unsourced and pointless. 24.131.195.253 (talk) 21:43, 21 February 2009 (UTC)

slashed capital O
Font "script", present in MS windows, uses a slashed both uppercase and lowercase O rather than 0. — Preceding unsigned comment added by 46.173.3.68 (talk) 13:49, 22 July 2012 (UTC)

Cheated HTML example
The example showing how to create a slashed zero using unicode in html 0&amp;#x0338; giving 0̸. does NOT use the technique rather the character was entered as a slashed zero!! DGerman (talk) 19:38, 24 February 2013 (UTC)


 * It's not a HTML example, it's a Unicode example. Andy Dingley (talk) 21:57, 24 February 2013 (UTC)