Friday, November 20, 2009

Binary Prefixes

We know of kilobytes, megabytes, gigabytes, terabytes, etc.
In SI units, kilo represents 1000 (=10 power 3), whereas in computer world, it represents 1024, mega represents 1000000 (= 10 power 6) whereas in computer world it represents 1048567. This created ambiguity in their usage and practices. To get rid of this ambiguity, Binary prefixes, were created.

kilobinary = kibi
megabinary = mebi
gigabinary = gibi
terabinary = tebi and so on.

So, with this adoption these units were rewritten as kibibytes, mebibytes, gibibytes, tebibytes, etc. Similarly, the new representation exists for bits viz., kibibits, mebibits, gibibits, tebibits, etc.
This way, kilobytes, megabytes are supposed to be used as their SI counterparts representing 1000 bytes and 1000000 bytes.

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2 comments:

  1. Oh these notations are, as it is complicated for non-techies. There is this KB, kB, Kb and so on and some of the mean the same thing and others have "subtle nuances" as differences as if they were artworks or fashion design.... So much for complicating UOMs...

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  2. :D

    By the way, this post is also available on FB ;D

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