Just happen to have a copy of "The Selectric Interface" in front of
me; $5 &S in case anyone wants it. Note that it's _not_ about converting
a normal Selectric to an I/O device, but about interfacing a 2740, 2980 &
Dura models, which are already I/O devices (albeit with 24, 48, or 115V
actuators) to an ASCII parallel port.
Kilobaud had a pair of articles (Dec/79 & Jan/80), but that too was about
converting an I/O unit (specifically, from a BCD (6 bit) code machine to
Correspondence code). There were some other codes in use as well in
other models; I had a couple and never could find a correct ball for them.
And yes, there were certainly many Rube Goldberg approaches to interfacing
a Selectric; I even recall seeing one of the solenoids-over-the-keyboard ones
in action way back when...
That was probably my post you referred to earlier about the Redactron mag
card system; unfortunately the typewriter is long gone, and the mag card drives
are spoken for. Redactron used a Selectric mechanism with a TTL level
interface already built in, useful in case someone ever runs across one.
While we're on the topic, a while back I sent a Selectric service manual to
someone who sometimes lurks on this list and he'd promised to make it available
on the Web (hint, hint... ;-)
mike
-----------Original message:
Message: 30
Date: Tue, 21 Mar 2006 16:14:50 -0800
From: "Chuck Guzis" <cclist at sydex.com>
Subject: RE: Where have all the Selectrics gone?
To: cctalk at
classiccmp.org
Message-ID: <200603211614500612.2FE3FE84 at 10.0.0.252>
Content-Type: text/plain; charset="ISO-8859-1"
Kilobaud is a great guess!
I opened up the June 1983 Issue of Microcomputing and, on, page 138,
there's an ad for a book called "The Selectric Interface":. Quoting:
--------------------------------------------
Daisy wheel quality without daisy wheel expense.
You need the quality print that a daisy wheel printer provides but the
thought of buying one makes your wallet wilt. The Selectric(tm) Interface,
a step-by-step guide to interfacing an IBM Selectric I/O writer to your
microcomputer.will give you that quality for a fraction of the price.
George Young, co-author of Microcomputing magazine's "Kilobaud Klassroom"
series, offers a low-cost alternative to buying a daisy-wheel printer.
<snip>
ISBN 0-88006-051-4 $12.97 from Wayne Green, Inc.
-------------------------------------------
So we know that I/O Selectrics were still plentiful enough in 1983 to
warrant publishing a book on interfacing them.
Cheers,
Chuck