Date: Fri, 30 Oct 1998 08:33:34 -0500 From: "Evan Champion" <evanc@concer.to> To: "Luigi Rizzo" <luigi@FreeBSD.ORG>, "Peter Wemm" <peter@netplex.com.au> Cc: <cvs-committers@FreeBSD.ORG>, <cvs-all@FreeBSD.ORG> Subject: Re: cvs commit: src/sys/i386/isa wcd.c Message-ID: <003201be0409$e4d602c0$c9252fce@cello.concer.to>
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>Yes.. The conventions are a bit grey, but the 'b' usually means bits while
>'B' means bytes. Likewise, m = milli and M = mega. So, KB = kilobytes, Kb
>= kilobits, KB/s = Kilobytes per second, MB/s = megabytes per second, Mb/s
>= megabits per second. I've seen some real mutilations, eg "mbs" which is
>nonsense (which by usual conventions would be millibitseconds).
The correct SI prefix for kilo is 'k', so therefore it should be kb/s for
kilobits per second, and kB/s for kilobytes per second.
Some people argue that a capital K should be used to denote a factor of 2^10
instead of 10^3, but no one ever complains about the equally ambiguous (and
much worse in terms of error) mega ('M') and giga ('G') prefixes. Because
of this I tend to consider 'k' to be the correct prefix, either in base 2 or
10.
There is no prefix K in SI; the SI unit K is, of course, Kelvin.
Evan
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