30 Jun
2007
30 Jun
'07
8:21 p.m.
On Sat, 30 Jun 2007, Chuck Guzis wrote:
Date: Sat, 30 Jun 2007 18:28:38 -0700
From: Chuck Guzis <cclist at sydex.com>
Reply-To: "General Discussion: On-Topic and Off-Topic Posts"
<cctalk at classiccmp.org>
To: "General Discussion: On-Topic and Off-Topic Posts" <cctalk at
classiccmp.org>
Subject: Re: Billy Pettit real disappointment
Gordon JC Pearce wrote:
Wasn't there a 5-1/4 hard drive (late 80s) that did a similar thing, some kind
of telescoping binary length set of solenoids (Ontrax?)
Peter Wallace
http://woodgears.ca/marbleadd/index.html
I reckon that's on-topic no matter what.
Watching the thing work brings to mind the head positioner on the
Univac Fastrand FH drums--basically solenoids driven by each bit of
the head position address (e.g. 8421) and via a system of levers,
translated to a physical head position.
How's that for on-topic?
Cheers,
Chuck