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Article View: comp.sys.ibm.pc.misc
Article #1804

Re: Q: Are the Baud Rate and BPS same?

#1804
From: JWFENNER
Date: Fri, 11 Sep 1992 14:34
19 lines
1231 bytes
Baud rate and Bits per second are essentially the same thing.
For example, if you have a 2400 baud modem, you can transfer
2400 bits per second.  Bytes per second is another story, however.
Data sent over the modems is broken down as follows:

+-----------+-----------+-------------+
| START BIT | DATA BITS | STOP BIT(S) |
+-----------+-----------+-------------+

where START BIT is 1 bit, DATA BITS is generally 8 bits (without parity),
and STOP BITS is usually 1 bit.  These numbers can vary, but this is the
most common format used today.

What this means is that for each BYTE of data you send, you actually send
10 bits, not just 8.  So your effective BYTES PER SECOND would be 240 for
a 2400 baud modem.

Most of the newer modems also use compression techniques to help improve
the EFFECTIVE baud rate.
Technical Details
Message-ID: <1001@engcon.marshall.ltv.com>
Path: arc1-ca.pugleaf.net!sparky!uunet!engcon!fenner
References: <1992Aug28.155701.218@news2.cis.umn.edu>

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Path: arc1-ca.pugleaf.net!sparky!uunet!engcon!fenner
From: fenner@engcon.marshall.ltv.com (JWFENNER)
Newsgroups: comp.sys.ibm.pc.misc
Subject: Re: Q: Are the Baud Rate and BPS same?
Message-ID: <1001@engcon.marshall.ltv.com>
Date: 11 Sep 92 14:34:57 GMT
References: <1992Aug28.155701.218@news2.cis.umn.edu>
Reply-To: fenner@engcon.UUCP (JWFENNER)
Distribution: usa
Organization: LTV MEG, Dallas, TX
Lines: 20