[KwartzLab] Hexadecimal

Michael Dunn md at cantares.on.ca
Tue Dec 4 13:10:17 EST 2012


But IBM traditionally used the slash with O 
(letter), not 0 like everyone else (number). I 
love standards. There are so many of them.

    At 11:53 AM -0500 12/4/12, Cedric Puddy wrote:
>A "slashed" 0 is for when clarity between "0" 
>and "O" (zero and capital letter "o") matters 
>greatly.
>
>Traditional console/terminal fonts take pains to 
>distinguish the two, since, on a computer, one 
>cannot be certain that there will be context to 
>distinguish the two.  In "normal" communication, 
>it's rarely a problem, because we usually have 
>context to refer to.  A special circle of hell 
>is reserved for companies that generate license 
>keys that have both characters, and are printed 
>in a font wherein both characters are nearly 
>identicalŠ :)
>
>It's not just an IBM thing -- I say it was a 
>"pretty much everybody" thing, until we started 
>letting non-computer people use computers, 
>instead of just admire them from a distance.
>
>	-Cedric
>
>On 2012-12-04, at 12:00 AM, Michael Dunn wrote:
>
>>    At 11:35 PM -0500 12/3/12, Karl Williams wrote:
>>>  My favorite hex number is C0FFEE.
>>
>>  Do you remember the "COFFEE" talking machine at the Science Centre? :-)
>>
>>
>>>  Sometime when I'm bored I'll pick any base, 
>>>other than ten, and do mind calculations. 
>>>Base-12 (Duodecimal) is fun.
>>
>>  6x9=42 (base 13)
>>
>>  Why does one of my calcs have "Pental"!??!!!??? (base 5)
>>
>>
>>>>  Doc's offhand comment about IBM and 
>>>>hexadecimal notation piqued my curiosity.
>>
>>  Why does IBM use "slashed" 0 for O?
>>
>>
>>  md
>>
>>
>>
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