Just sharing some of my inconsequential lunch conversations with you... RSS  

Tuesday, August 04, 2009

And now for something completely boring

We often use KB to represent kilo bytes. By doing this, we are making the following mistakes:

  1. If we want to represent it on a 10 base form, 103, we should use kB
  2. If we want to represent it on a 2 base form, 210, we should use KiB

Here are the 10 base prefixes we learned at school:

Factor Name Symbol
1024 yotta Y
1021 zetta Z
1018 exa E
1015 peta P
1012 tera T
109 giga G
106 mega M
103 kilo k
102 hecto h
101 deka da

And here’s what our children will learn:

Factor Name Symbol Origin Derivation
210 kibi Ki kilobinary: (210)1 kilo: (103)1
220 mebi Mi megabinary: (210)2 mega: (103)2
230 gibi Gi gigabinary: (210)3 giga: (103)3
240 tebi Ti terabinary: (210)4 tera: (103)4
250 pebi Pi petabinary: (210)5 peta: (103)5
260 exbi Ei exabinary: (210)6 exa: (103)6



Now that I think of it, we should use SI standards to end the English speaking vs. rest of the world billion ambiguity. We should start using SI nomenclature on the financial world, stop talking about 10 billion dollars, and start talking about 10 tera dollars. Or 10 giga dollars, see what I mean? :)


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