>Those PerSci drives bring about $9 in scrap value if you sufficiently dismantle
>them. That's about a buck more than the older Shugart drives, and two bucks or
>so more than the newer, lighter 8" full-size drives of the late '80's. They all
>have significant scrap value as "high-quality" aluminum.
>
>If you dismantle them, the stuff you take off the castings, heads, motors,
>screws, solenoids, sensors, etc, becomes spare parts/hardware, while the
>casting, which takes up most of the space gets recycled in a constructive way.
>It's not a way to make money, but it reduces waste.
The drives have been "self-dismantling" over the past couple of decades.
In particular, the glue that holds the optical gratings has - in every case
that I've seen - come undone. I've managed to make a few good PerSci's
by combining parts from broken ones, at least. But they're amazingly
complicated drives. (As well they should be, considering how much
they cost back in the 70's - you could buy a brand new car for what 4
PerSci's cost.)
Even on the broken ones there's a huge assortment of electromechanical
parts still in place. How many other 8" floppy drives had motorized
loading/ejecting? (I know that some Shugarts and NEC's had the
option of ejecting via a solenoid, but I'm not counting solenoids here.
And I'm certainly not counting the drives that would, if you loaded and
unloaded the head often enough, vibrate so much that the door popped
open! )
Tim.
Picked up a Wavetek waveform generator model 159 yesterday at the thrift
and it works great ($3.95). also picked 6 really nice mousepads for
that part of the collection at the same thrift. Picked up some in the
box 2600, Genesis, and Odyssey game cartridges from 80 cents to $2.99
each.
I know they are not 10 years old yet but has anyone else notice the
number of playstation one's at the thrift's lately ? They have been
priced from 3.99 (console only) to 14.99 (complete systems). New games
(unopened) have been $1 to $13 dollars at the thrift's here.
Hello Joe,
My name is Gene and I may not have responded to the right selection at
the bottom of your add with yesterdays inquary. I'm interested in the HP
9122 you offered for sale. What is the cost and shipping to MA? Are the
units fully operational?
Thank you
Gene
It's been a good day. Picked up a couple of new items.
One, I picked up an Atari Portfolio with spare 128k and 64k
memory cards and the PC Card drive from someone in Germany in
exchange for some DVDs I produce. It near mint condition it
appears. Doc is in german but I can understand enough to get me
through. Now to go hack some ATMs. :-)
The other cool item was the first dual processor BeBox! First in
this case as in the first one off the assembly line. Can't wait to get
this home and hooked up. Of course I don't think that falls under
the 10 year rule.
-----
"What is, is what?"
"When the mind is free of any thought or judgement,
then and only then can we know things as they are."
David Williams - Computer Packrat
dlw(a)trailingedge.com
http://www.trailingedge.com
On 29 Jul 2001, Iggy Drougge wrote:
> Doug Coward skrev:
> >Douglas Quebbeman <dhquebbeman(a)theestopinalgroup.com> said:
> >> heh. the winner should be someone who manages to find a way
> >> to wear both a t-sheet and a pocket protector...
That's easy. Clip the pocket protector on with alligator clips
attached to red and black wires... this will have the advantage or
providing one with an emergency supply of spare test leads. :-)
> > This just got me to thinking....
> > How did pocket protectors become associated with 'computer
> >enthusiasts'?
Ok, I see it's time for the Pocket Protectors 101 course...
Since I wore one back in college during a time when I was taking a lot
of math, science and electronics classes, I'll take a guess at
answering this. Back then, math, engineering, electronics, etc.
students were the most likely students to be computer hackers. Such
students have a need to carry a wide variety of pencils and pens,
etc. in their shirt pockets; for example, I typically had fine and
extra fine point Scripto (?) "click" pencils (press on the little
chrome tab that holds the eraser and more lead comes out), a
retractable erasor, a couple of different pens and perhaps a
felt-tipped marker or two.
Pocket protectors are made of reasonably thick vinyl and lessen the
chance of one damaging oneself, or one's clothes, if one fall, bends,
or bumps into something the wrong way --- that is, in such a way as to
get stabbed by the writing instruments in one's shirt pocket. Pocket
protectors also keep one's pocket from getting dirty from lead and
pens that might leak ink; in addition, they protect the shirt pocket
>from the wear of clipping and unclipping writing instruments to and
>from it.
> > And how many here have wore a pocket protector on a regular
> >basis in the past?
>
> What the hell is a pocket protector?
You've never heard of a pocket protector before? Amazing. Perhaps
it's a language translation thing, and they're called something else
in your country. Over here, they're very popular. A pocket
protector, as mentioned above, is a reasonably heavy vinyl lining for
a shirt pocket, into which one places writing instruments, etc. Refer
to figure 1 below for an illustration of a pocket protector. The
pocket protector is represented by the asterisks; the straight lines
represent the shirt and pocket.
|
|*
|*
|* ***
|* *|*
|* *|*
|* *|
|***|
+---+
fig. 1
ASCII cutaway representation of a pocket protector.
--
Copyright (C) 2001 R. D. Davis The difference between humans & other animals:
All Rights Reserved an unnatural belief that we're above Nature &
rdd(a)rddavis.net 410-744-4900 her other creatures, using dogma to justify such
http://www.rddavis.net beliefs and to justify much human cruelty.
ask your local radio amateur to put two type N connectors on it,
and since they cost a few please supply them.
Allison
-----Original Message-----
From: Terry Collins <terryc(a)woa.com.au>
To: Classic Computer <classiccmp(a)classiccmp.org>
Date: Sunday, July 29, 2001 3:50 AM
Subject: Thick Net Cable Terminator in Sydney Australia
>I have a 30 metre length of thicknet (10base5) with screw on fittings at
>each end and a vampire tap in the middle. As the cable gets dragged
>around from LUG fest to LUG fest, I expect the vampire tap to eventually
>fail and damage the cable.
>
>So, I am looking for someone (preferrably) in Sydney, Australia) who is
>able to break the cable in half and fit new screw fittings.
>
>
>--
> Terry Collins {:-)}}} Ph(02) 4627 2186 Fax(02) 4628 7861
> email: terryc(a)woa.com.au www: http://www.woa.com.au
> WOA Computer Services <lan/wan, linux/unix, novell>
>
> "People without trees are like fish without clean water"
On Jul 28, 8:16, Bill Pechter wrote:
> But bridges originally just repeat...
> -- maybe they do the old 1987 spanning tree loop avoidance...
> -- maybe they learn and eventually send just the traffic for the remote
end
>
> But in the beginning they were dumb repeaters.
> And the network was a dumb wire... Coax. How dumb can it get.
I'm not quite sure what you're saying. If you're saying that the earliest
bridges were dumb repeaters, you're wrong. The definition of a bridge is a
layer 2 device that passes traffic according to the destination addresses
contained in the packets. If you're saying that the way a bridge works is
to learn where addresses are, and until it knows, it will pass packets
everywhere, that's true.
Even with old bridges, you wouldn't be able to see *all* the network
traffic because the bridges would split the net into different collision
domains (that's what they are for), so the only traffic that would go
everywhere was broadcast traffic. You wouldn't even see all the broadcast
traffic if you had a router or two in the system, and there's nothing new
about that either.
--
Pete Peter Turnbull
Network Manager
University of York
Saw this tidbit in the latest (July 2001) IEEE History Center
newsletter, and thought the scanning electron microscopy folks here
might find it interesting:
2001-2002 IEEE Life Members Fellowship in Electrical and Computing
History
This year's Fellowship in Electrical and Computing History has been
awarded to Cyrus Mody, whose research is on "Scanning Probe
Microscopy: The Genesis and Development of Tools and Practices in
Engineering Science, 1970-2000." Cyrus Mody earned his A.B. in
engineering science from Harvard University and is pursuing graduate
studies at Cornell University.
(end)
If you want to find out more about the IEEE History Center,
look at <http://www.ieee.org/history_center>.
-Frank McConnell
