Atlas48/JargonFile
1
0
Fork 0
Code Issues Pull Requests Packages Projects Releases Wiki Activity

Original files version 4.4.7

Browse Source
This commit is contained in:
Bob Mottram
2014-03-27 18:54:56 +00:00
parent c632ed8d67
commit cb847ea893
2578 changed files with 26300 additions and 0 deletions
Download Patch File Download Diff File Expand all files Collapse all files

27
original/html/0/numeral-zero.html Normal file
View File

@@ -0,0 +1,27 @@
<?xml version="1.0" encoding="ISO-8859-1" standalone="no"?>
<html xmlns="http://www.w3.org/1999/xhtml"><head><title>0</title><link rel="stylesheet" href="../../jargon.css" type="text/css"/><meta name="generator" content="DocBook XSL Stylesheets V1.61.0"/><link rel="home" href="../index.html" title="The Jargon File"/><link rel="up" href="../0.html" title="0"/><link rel="previous" href="me.html" title="/me"/><link rel="next" href="one-TBS.html" title="1TBS"/></head><body><div class="navheader"><table width="100%" summary="Navigation header"><tr><th colspan="3" align="center">0</th></tr><tr><td width="20%" align="left"><a accesskey="p" href="me.html">Prev</a> </td><th width="60%" align="center">0</th><td width="20%" align="right"> <a accesskey="n" href="one-TBS.html">Next</a></td></tr></table><hr/></div><dt><a id="numeral-zero"/><dt xmlns="" id="numeral-zero"><b>0</b></dt></dt><dd><p> Numeric zero, as opposed to the letter &#8216;O&#8217; (the 15th
letter of the English alphabet). In their unmodified forms they look a lot
alike, and various kluges invented to make them visually distinct have
compounded the confusion. If your zero is center-dotted and letter-O is
not, or if letter-O looks almost rectangular but zero looks more like an
American football stood on end (or the reverse), you're probably looking at
a modern character display (though the dotted zero seems to have originated
as an option on IBM 3270 controllers). If your zero is slashed but
letter-O is not, you're probably looking at an old-style ASCII graphic set
descended from the default typewheel on the venerable ASR-33 Teletype
(Scandinavians, for whom Ø is a letter, curse this arrangement).
(Interestingly, the slashed zero long predates computers; Florian Cajori's
monumental <i class="citetitle">A History of Mathematical Notations</i> notes
that it was used in the twelfth and thirteenth centuries.) If letter-O has
a slash across it and the zero does not, your display is tuned for a very
old convention used at IBM and a few other early mainframe makers
(Scandinavians curse <span class="emphasis"><em>this</em></span> arrangement even more,
because it means two of their letters collide). Some Burroughs/Unisys
equipment displays a zero with a <span class="emphasis"><em>reversed</em></span> slash. Old
CDC computers rendered letter O as an unbroken oval and 0 as an oval broken
at upper right and lower left. And yet another convention common on early
line printers left zero unornamented but added a tail or hook to the
letter-O so that it resembled an inverted Q or cursive capital letter-O
(this was endorsed by a draft ANSI standard for how to draw ASCII
characters, but the final standard changed the distinguisher to a tick-mark
in the upper-left corner). Are we sufficiently confused yet?</p></dd><div class="navfooter"><hr/><table width="100%" summary="Navigation footer"><tr><td width="40%" align="left"><a accesskey="p" href="me.html">Prev</a> </td><td width="20%" align="center"><a accesskey="u" href="../0.html">Up</a></td><td width="40%" align="right"> <a accesskey="n" href="one-TBS.html">Next</a></td></tr><tr><td width="40%" align="left" valign="top">/me </td><td width="20%" align="center"><a accesskey="h" href="../index.html">Home</a></td><td width="40%" align="right" valign="top"> 1TBS</td></tr></table></div></body></html>