Changes between Initial Version and Version 3 of Ticket #5378


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Timestamp:
Oct 10, 2010, 11:23:45 PM (9 years ago)
Author:
mmadia
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  • Ticket #5378

    • Property Owner changed from nobody to stippi
    • Property Component - GeneralUser Interface
    • Property Summary Obsolete units in HaikuUpdate Obsolete units (KB, MB, GB) to new standards (KiB, MiB, GiB)
  • Ticket #5378 – Description

    initial v3  
    11http://en.wikipedia.org/wiki/Gigabyte
    2 http://en.wikipedia.org/wiki/IEEE_1541-2002
     2
     3The following two quotes are from http://en.wikipedia.org/wiki/IEEE_1541-2002
     4
     5
     6"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."
     7
     8"IEEE 1541 recommends:
     9* a set of units to refer to quantities used in digital electronics and computing:
     10  * ''bit'' (symbol 'b'), a binary digit;
     11  * ''byte'' (symbol 'B'), a set of adjacent bits (usually, but not necessarily, eight) operated on as a group;
     12  * ''octet'' (symbol 'o'), a group of eight bits;
     13* a set of prefixes to indicate binary multiples of the aforesaid units:
     14  * ''kibi'' (symbol 'Ki'), 2<sup>10</sup> = {{gaps|1|024}};
     15  * ''mebi'' (symbol 'Mi'), 2<sup>20</sup> = {{gaps|1|048|576}};
     16  * ''gibi'' (symbol 'Gi'), 2<sup>30</sup> = {{gaps|1|073|741|824}};
     17  * ''tebi'' (symbol 'Ti'), 2<sup>40</sup> = {{gaps|1|099|511|627|776}};
     18  * ''pebi'' (symbol 'Pi'), 2<sup>50</sup> = {{gaps|1|125|899|906|842|624}};
     19  * ''exbi'' (symbol 'Ei'), 2<sup>60</sup> = {{gaps|1|152|921|504|606|846|976}};
     20* that the first part of the binary prefix is pronounced as the analogous SI prefix, and the second part is pronounced as ''bee'';
     21* that SI prefixes are not used to indicate binary multiples."