Is the reason those old radio/phonograph boxes are not being thrown
away is that noone notice the cover and thinks it's just a pretty
dresser w/o drawers :)? Also hideaway sewing machines.
I do see many of them in thrift stores, though. It was a good idea,
to keep technology invisible. Now, it's the other way around.
Cover EVERYthing with black and beige boxes.
Of course, the System/36 (I think, maybe not) was built into a desk.
And then there were the teletypes (are the ones that are mostly used
as examples of teletypes ASR-33?), printers, etc.
>> S/360s are very rare (thousands made, maybe a dozen left).
>
>So the moral of the story is that manufacturers should build furniture
>into their computer systems, so when the computer is obsolete, the
system
>will live on as furniture. :-)
>
>-- Doug
>
>
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I found this on E-bay. The minimum bid is $45. If you think this is too
much (I do!!), you can contact the owner and see if he'll take less if it
doesn't sell. The URL is
"http://cgi.ebay.com/aw-cgi/eBayISAPI.dll?ViewItem&item=12277630".
Description
GRID 8088 XT Laptop. Rugged Construction. 720k FDD, No HDD, 512k Mem,
SER/PAR, Plasma Screen, AC Adapter Module substitutes battery. Works
Perfectly. Good for diagnostics, automotive, marine, etc. Excellent
condition. Buyer prepays with money order or check and pays shipping.
Joe
On Apr 26, 19:19, Olminkhof wrote:
> Subject: Logic State Analyser
> I have been rearranging my storage area and uncovered a HP 1611A Logic
> State Analyser fitted with a Z80 option that I picked up a few years ago.
>
> I have no idea what one would do with this. Should I cherish it? Play
with
> it?
> Does one need the specific manual or are these generic and perhaps
> explained in standard texts?
>
> There are a number of plugin points for various types of probes, none of
> which I have off course. It powers up fine though.
AFAIR the ordinary probes are just micro-hooks on single wires, which plug
into a little distribution box on the end of a ribbon cable.
It's quite a nice analyser, so "play with it" gets my vote. It was also
quite popular, so I expect you could find manuals if you look/ask around.
I'm sure we have some 1611s or 1610s in the labs. If you want me to take
a look at them next week, shout. There's also a description of both
models, and several examples of use, in John Lenk's book "How To
Troubleshoot And Repair Microcomputers" -- which IMHO isn't a very good
book, but there seem to be lots of old copies of it about, and in
libraries.
--
Pete Peter Turnbull
Dept. of Computer Science
University of York
Interesting. I was in the library today, and I happened to glance
on the back of a VT-220 they had. I thought it was video, because of
the icon, but then I said to my friend, "Cool! It can do ethernet!"
>of collisions and other strange things. Looked like one of the
computers
>on it had gone crazy and was jabbering, but turning off one machine at
a
>time didn't help things.
>
>OK, time to grab a 'scope. What on earth was that? It looks like
>composite video. It _is_ composite video. OK, time to trace the cable.
>You guessed it. Some luser had plugged a spare t-piece on the thinwire
>segment onto the back of a VT220.
>
>I can't remember what LART I used ;-)
>
>
>> Jack Peacock
>>
>
>-tony
>
>
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[Stopping thinnet with a 3270 card...]
I once heard of a manager of some sort plugging thinnet into the back
of a VT220 (?It was VTsomething...?) video-out port. Seems he thought
it was one of those network computer deals...
VT220s had a video out BNC connector. You could drive a monitor with
it, but wasn't very useful plugged into a coax Ethernet cable.
Jack Peacock
I found a somewhat stale lead (last November) on three or four
Terak computers that were sold at the monthly University of Washington
surplus sale. Is there anyone on the list familiar with this sale?
- John
Jefferson Computer Museum <http://www.threedee.com/jcm>
For anyone that's interested or just tired of the ads for them, all the
previously advertised test equipment has been spoken for. Thanks for
putting up with the messages.
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Allison wrote:
>The Cray-1 was ECL-10k fast for it's time but low density and rams for
>that technology were 1 or 4k ECL bipolar. ECL had several
>characteristics, FAST, high power consumption and low density.
Excuse my ignorance, what does ECL stand for?
Hans
<I once heard of a manager of some sort plugging thinnet into the back
<of a VT220 (?It was VTsomething...?) video-out port. Seems he thought
<it was one of those network computer deals...
<[Networked computers will be OK. It means all the terminals get run fro
< some large computer off somewhere else. Does this sound familiar?
Yes, happend at DEC sometimes. DEC had VAXmate (AT class) machine that
was netbootable and could do file sharing via eithernet. There were also
X-terminals (DECmindows) that used the net for both the hookup and loading
operating software.
Allison
<>The Cray-1 was ECL-10k fast for it's time but low density and rams for
<>that technology were 1 or 4k ECL bipolar. ECL had several
<>characteristics, FAST, high power consumption and low density.
<
<Excuse my ignorance, what does ECL stand for?
ECL or emitter coupled logic is a form is bipolar logic that operates
at low levels and is non saturating. Non saturating is where the active
devices are neither fully off or fully on. Logic levels are referenced
to a bias level so translation to MOS/CMOS/TTL is required. The reason
for doing non-saturated logic is speed, transistors have a problem like
tubes of charge storage making them harder to turn on or off and reducing
speed. Generally speaking from the late '60s through the '80s ECL managed
to be a factor of 5-20 times faster than the prevailing logic system(RTL,
DTL, TTL) until sub-micron CMOS started to get under 10ns. The last ECL
parts I looked at(years ago) were sub 1nS and could be clocked faster than
1000mhz. An example of the speed difference is 1974 the fastest TTL
divide by 10 (7490) was maybe 35mhz, ECL divide by 10 was 500mhz.
Allison
