Re: Baud vs. BPS (Re: disk transfer methods)

["Henrik Gudat" <not@available.com>]

In article <7pqc8v$jua@ds2.acs.ucalgary.ca>, wbdesnoy@acs2.acs.ucalgary.ca
(Byron Desnoyers Winmill) wrote:


> Brian Hammack (brian.hammack@rook.wa.com) wrote:
> :  WAU| : ProTERM 3.1 is faster than ADT.  On a IIGS, you can transfer
> :     | : at 56k (that's 56,000 baud!) and besides, it has Zmodem for
>
> : No, that's 57,600 bits per second.  :)
>
> I have a vauge idea of how baud and bps work with modems, but it is clouded
> by years of disuse.  :-(  If anybody has a moment, I would appreciate what
> (if any) role baud has with serial ports.

Baud is the name of Mr. Baud. He came up with a concept of transmitting
information over long distances.

Baud is bits per second of pure raw data plus additional bits for framing
and error detection. Thus, the same serial connection has a baud rate that
is a bit higher than bits per second. Baud means "the whole packet", bps
only the original data you are transmitting.

For example, if you choose 8 data bits and 1 stop bit, then 8 bits go into
the bps and 9 into the baud calculation.

I really hope I didn't mixed them up. :-)

-henrik