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From: papa@pollux.usc.edu (Marco Papa)
Newsgroups: comp.sys.amiga
Subject: Re: "baud" == "bits"/"second"
Message-ID: <18307@usc.edu>
Date: 7 Jul 89 08:17:29 GMT
References: <42300@bbn.COM> <114038@sun.Eng.Sun.COM> <7283@ecsvax.UUCP> <7284@ecsvax.UUCP>
Sender: news@usc.edu
Reply-To: papa@pollux.usc.edu (Marco Papa)
Organization: Felsina Software, Los Angeles, CA
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In article <7284@ecsvax.UUCP> kms@ecsvax.UUCP (Ken Steele) writes:
>Isn't it about time for someone to give us the derivation
>of the term "baud."  I haven't heard that story in a while
>Grandad...

From the Glossary of the Black Box catalog (Black Box is a major comm hardware
manufacturer/distributor):

Baud -- Unit of signalling speed. The speed in baud is or events per second.
If each events represents only one bit condition, baud rate equals bps. When 
each event represents more than one bit (e.g. dibit), baud rate does not 
equal bps.

Baudot -- Data transmission code in which five bits represent one character. 
Use of letters/figures shift enables 64 alphanumeric characters to be 
represented. Baudot is used in many teleprinter systems with one start bit and 
1.42 stop bits added. [Baudot is the actual last name of the inventor of the
Baudot encoding].

BPS (bits per second) -- Unit of transmission rate.

Dibit -- a group of two bits.

-- end of quote

Result: Baud comes from Baudot.

-- Marco Papa 'Doc'
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