[haiku-bugs] Re: [Haiku] #5378: Update Obsolete units (KB, MB, GB) to new standards (KiB, MiB, GiB) (was: Obsolete units in Haiku)
- From: "mmadia" <trac@xxxxxxxxxxxx>
- Date: Sun, 10 Oct 2010 23:23:46 -0000
#5378: Update Obsolete units (KB, MB, GB) to new standards (KiB, MiB, GiB)
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Reporter: damoklas | Owner: stippi
Type: bug | Status: new
Priority: normal | Milestone: R1
Component: User Interface | Version: R1/Development
Resolution: | Keywords:
Blocked By: | Has a Patch: 0
Platform: All | Blocking:
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Description changed by mmadia:
Old description:
> http://en.wikipedia.org/wiki/Gigabyte
> http://en.wikipedia.org/wiki/IEEE_1541-2002
New description:
http://en.wikipedia.org/wiki/Gigabyte
The following two quotes are from
http://en.wikipedia.org/wiki/IEEE_1541-2002
"While the International System of Units (SI) defines multiples based on
powers of ten (like k = 103, M = 106, etc.), a different definition is
sometimes used in computing, based on powers of two (like k = 210, M =
220, etc.) This is due to the use of binary addressing for computer memory
locations."
"IEEE 1541 recommends:
* a set of units to refer to quantities used in digital electronics and
computing:
* ''bit'' (symbol 'b'), a binary digit;
* ''byte'' (symbol 'B'), a set of adjacent bits (usually, but not
necessarily, eight) operated on as a group;
* ''octet'' (symbol 'o'), a group of eight bits;
* a set of prefixes to indicate binary multiples of the aforesaid units:
* ''kibi'' (symbol 'Ki'), 2<sup>10</sup> = {{gaps|1|024}};
* ''mebi'' (symbol 'Mi'), 2<sup>20</sup> = {{gaps|1|048|576}};
* ''gibi'' (symbol 'Gi'), 2<sup>30</sup> = {{gaps|1|073|741|824}};
* ''tebi'' (symbol 'Ti'), 2<sup>40</sup> = {{gaps|1|099|511|627|776}};
* ''pebi'' (symbol 'Pi'), 2<sup>50</sup> =
{{gaps|1|125|899|906|842|624}};
* ''exbi'' (symbol 'Ei'), 2<sup>60</sup> =
{{gaps|1|152|921|504|606|846|976}};
* that the first part of the binary prefix is pronounced as the analogous
SI prefix, and the second part is pronounced as ''bee'';
* that SI prefixes are not used to indicate binary multiples."
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Ticket URL: <http://dev.haiku-os.org/ticket/5378#comment:3>
Haiku <http://dev.haiku-os.org>
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Other related posts:
- » [haiku-bugs] Re: [Haiku] #5378: Update Obsolete units (KB, MB, GB) to new standards (KiB, MiB, GiB) (was: Obsolete units in Haiku) - mmadia
