[comp.dcom.modems] BPS vs. BAUD

RANCK@VTVM1.BITNET ("Wm. L. Ranck") (04/23/87)

I think Geoff is re-defining Bits Per Second to mean *data* bits per
second.  That's throughput.  Start/stop bits are still part of the
raw bit rate when discussing modem speeds.
  BTW: I seem to recall that 1200bps modems actually transmit at 600 BAUD.
The carrier changes state 600 times per second but each state change
represents a 'dibit' (pronounced die-bit) thus the bit-per-second rate
is 2*BAUD.

berger@clio.UUCP (05/04/87)

That's correct:  Bits and baud have never truly been interchangable
terms.  To make matters worse, all bits don't have the same length
in a serial channel.  

			Mike Berger
			Center for Advanced Study
			University of Illinois 

			berger@clio.las.uiuc.edu
			{ihnp4 | convex | pur-ee}!uiucuxc!clio!berger