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1995-01-01
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Date: Wed, 12 Oct 1994 00:41:38 EST
From: Rob Slade <roberts@decus.ca>
Subject: Book Review: "The RS-232 Solution" by Campbell
BKRS2SOL.RVW 940811
Sybex Computer Books
2021 Challenger Drive
Alameda, CA 94501 USA
510-523-8233 800-227-2346
Fax: 510-523-2373
or
Firefly Books
250 Sparks Avenue
Willowdale, Ontario M2H 2S4
416-499-8412 Fax: 416-499-8313
"The RS-232 Solution", Campbell, 1989, 0-89588-488-7, U$24.95/C$32.95
Most computer users, even those dealing with communications and
modems, will not have to deal with the intricacies of the RS-232 (or
EIA-232E) interface standard for serial communications. You buy a
cable, plug in the modem, and that's the end of it. For those who do
want to know more, this book is fascinating -- as well as being
completely accessible for the non-technical reader.
Part one deals with the interface, reasons for an interface standard,
and the general concepts and tools needed to attack an interface
problem. Part two is primarily a series of "case studies" and
specialized examples. Interestingly, Campbell nowhere gives a full
listing of the RS-232 pin assignments, concentrating on the "Big
Eight" which do form the foundation of almost all serial communications.
The chapter on the Mac is most interesting -- the Mac does *not* have
an RS-232 port, relying instead on a subset of the EIA-422 standard.
Some notes are odd, however. The juxtaposition of a marginal note
complaining about the IBM PC asynchronous (serial) port is placed,
without comment, next to a discussion of male and female connector
assignments. Read carefully, it indicates that IBM was right, but it
may confuse some readers.
Those who want the full technical details of the interface
specification will have to get them elsewhere. Few will want as much
detail on printers as is given here. For those hobbyists truly
interested in the interface, this is an intriguing, and potentially
quite useful, source.
copyright Robert M. Slade, 1994 BKRS2SOL.RVW 940811. Distribution
permitted in TELECOM Digest and associated newsgroups/mailing lists.
Vancouver ROBERTS@decus.ca
Institute for Robert_Slade@sfu.ca
Research into rslade@cue.bc.ca
User p1@CyberStore.ca
Security Canada V7K 2G6