RE: baud vs. baud rate

Subject: RE: baud vs. baud rate
From: "Combs, Richard" <richard -dot- combs -at- Polycom -dot- com>
To: "Fred Ridder" <docudoc -at- hotmail -dot- com>, <robert -at- lauriston -dot- com>, <techwr-l -at- lists -dot- techwr-l -dot- com>
Date: Wed, 1 Jul 2009 11:32:05 -0600

Fred Ridder wrote:

> One important nit to pick with Robert's answer:
>
> When talking about a data transmission rate, the correct abbreviation
is
> kbps rather than kbit/sec. In the case of data transmission, the
"kilo"
> applies to the unit "bits per second" (or bps) rather than referring
to
> kilobits (a different unit) per second. The difference is that 1 kbps
is
> 1000 bits per second, while 1 kilobit per second would be 1024 (2^10)
bits.

I share the preference for kbps -- and it's much more widely used and
understood. But data transmission rates have always been specified using
decimal, not binary, multipliers -- so a kilobit per second is still
1000 bits per second.

The problem of using the same prefixes for two different numbering
systems, decimal and binary, was supposedly solved when the IEC and
various other bodies adopted a new set of binary-specific prefixes:
kilobinary or kibi (Ki) for 1024, megabinary or mebi (Mi) for 1,048,576,
etc. But I believe there are fewer than 1 Ki people in the entire world
who consistently use them. :-)

Richard


Richard G. Combs
Senior Technical Writer
Polycom, Inc.
richardDOTcombs AT polycomDOTcom
303-223-5111
------
rgcombs AT gmailDOTcom
303-777-0436
------






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References:
baud vs. baud rate: From: Joel
Re: baud vs. baud rate: From: Robert Lauriston
RE: baud vs. baud rate: From: Fred Ridder

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