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RE: kibibits and mebibits (Was: Re: kbps Mbps.) posted 08/03/1999
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Just to make things a little more confusing...Will there be an American
billion in a kibibit or a British billion ? :-)

G.

Graham Mckenzie
Systems Engineer
Global IT Group (Green Fields & Acquisitions)
Jabil Circuit



		-----Original Message-----
		From:	Frank Jimenez [mailto:fjimenez@xxxxxxxxxxxx]
		Sent:	Tuesday, August 03, 1999 12:06 PM
		To:	cisco@xxxxxxxxxxxxxx; zoccav@xxxxxxxxxxxx
		Subject:	kibibits and mebibits (Was: Re: kbps Mbps.)

		 << File: Frank Jimenez.vcf >> It gets even better than
that.  There is a proposal out there to standardize the units for binary
multiples.

		In other words, since 1 kilobit should really equal 1000
bits (not 1024), the proposal is to have a kibi- prefix.

		1 kibibit = 1024 bits (2^10 bits)
		1 mebibit = 1048576 bits (2^20 bits)

		For more on this, go look at
http://physics.nist.gov/cuu/Units/binary.html 

		Ah, progress...

		Frank Jimenez
		CompuCom Systems, Inc.
		fjimenez@xxxxxxxxxxxx

		>>> Vincenzo Zocca <zoccav@xxxxxxxxxxxx> 08/03/99 05:20PM
>>>
		Assuming prefixes are taken from SI/metric system, the
'kilo' prefix in
		example ('K') should be in lower case ('k'). Like in 'km'
(kilometer for USA
		and kilometre UK readers) and 'kHz' ('kg' (kilogram) would
be a bad example as
		it is a unit itself).

		The Mega 'M' should be in upper case, as it is.

		Unfortunately, binary units do not seem to fall in the
SI/metric system. Time
		(in s) does however.

		Following links simultaneously provide clarity and confusion
in this matter:
		http://www.hlalapansi.demon.co.uk/Metric/index.html#prefix 
		http://www.hlalapansi.demon.co.uk/Metric/index.html#binary 

		Sorry to be pedantic,
		Vincenzo

		>    KBPS and MBPS:  kilobytes and megabytes
		>    Kbps and Mbps:  kilobits and megabits


	
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