I worked at Univac Defense Systems in the early 70's. The launch control
computer for the Minuteman was made by Univac. It had plated wire memory. I
remember when the failure analysis group had to analyze a module that failed in
the field. The module was locked in a safe and someone had to boos
ystem.
Dwight
From: cctalk on behalf of William Donzelli via
cctalk
Sent: Monday, October 21, 2019 8:13 AM
To: Al Kossow via cctalk
Subject: Re: plated wire memory
> The 9300 used it, Donzelli says it wasn't very reliable
And I do not remember where I h
> The 9300 used it, Donzelli says it wasn't very reliable
And I do not remember where I heard that. It may have been from a
Univac old-timer.
--
Will
done on a flat surface with current day processing.
Dwight
From: cctalk on behalf of Chuck Guzis via
cctalk
Sent: Sunday, October 20, 2019 2:23 PM
To: dwight via cctalk
Subject: Re: plated wire memory
On 10/20/19 1:50 PM, dwight via cctalk wrote:
> It is funny th
On 10/20/19 1:50 PM, dwight via cctalk wrote:
> It is funny that the most common memory used today is a DRO type memory. The
> read destroys much of the charge on a DRAM cell, requiring a write back of
> the data.
> Dwight
That's true today, but probably not in the near future. Persistent
memor
: Nigel Johnson ; gene...@ezwind.net
; Discussion@
Subject: Re: plated wire memory
On 10/20/2019 09:45 AM, Nigel Johnson via cctalk wrote:
> I remember an IBM engineer talking about this at our ham
> radio club. The wire was coiled inside a drum and pulses
> were sent down the wire.
On 10/20/2019 09:45 AM, Nigel Johnson via cctalk wrote:
I remember an IBM engineer talking about this at our ham
radio club. The wire was coiled inside a drum and pulses
were sent down the wire. The 'read head' was a magnetic
pickup at the other end of the coil - and access time was
however
> On October 20, 2019 at 9:35 AM dwight via cctalk
> wrote:
>
> I was just listening to a video on the Voyager space craft. It used an
> interesting type of memory, called magnetic wire memory. There is only a
> little bit of information of it on the web. It is clever in that has a
> non-dest
https://www.computerhistory.org/collections/catalog/102620884
On 10/20/19 9:04 AM, Al Kossow via cctalk wrote:
> and NCR rod memory
> https://pdfs.semanticscholar.org/60db/392e7b39d0b1697ead9deb033a4ae488dbe7.pdf
>
>
and NCR rod memory
https://pdfs.semanticscholar.org/60db/392e7b39d0b1697ead9deb033a4ae488dbe7.pdf
https://vipclubmn.org/Articles/PlatedWire.pdf
https://vipclubmn.org/Articles/PlatedWireAddendum.pdf
and
https://vipclubmn.org/Articles/Wired_Up.pdf
The 9300 used it, Donzelli says it wasn't very reliable
http://s3data.computerhistory.org/brochures/sperryrand.univac9000.1967.102646204.pdf
On 10/20/19 7:43 AM, Al Kossow via cctalk wrote:
> search for NDRO and thin film memory
> Univac used it in their commercial and military computers
>
Apparently not for long. The 1107 was a thin-film memory machine, but
the 1108 et seq. was not, IIRC. At least I don't recall any mention in
the d
https://ntrs.nasa.gov/search.jsp?R=19740018598
from their web page, "SCI" built the Voyager memory, I've not found details in
the on-line docs
https://ntrs.nasa.gov/search.jsp?R=19810001583
On 10/20/19 7:43 AM, Al Kossow via cctalk wrote:
> search for NDRO and thin film memory
> Univac used it
I don't know much about plated wire store, but I do know it was used in the
Manchester University MU5 computer which pioneered heuristic pipelining.
There is some info here:-
http://homepages.inf.ed.ac.uk/cgi/rni/comp-arch.pl?Ibuff/mu5-ibu.html,Ibuff/
mu5-ibu-f.html,Ibuff/menu-mu5.html
https://bo
On Sun, Oct 20, 2019 at 07:43:34AM -0700, Al Kossow via cctalk wrote:
> search for NDRO and thin film memory
> Univac used it in their commercial and military computers
>
> On 10/20/19 7:35 AM, dwight via cctalk wrote:
> > I was just listening to a video on the Voyager space craft. It used an
> >
On Sun, Oct 20, 2019, 09:45 Nigel Johnson via cctalk
wrote:
> I remember an IBM engineer talking about this at our ham radio club. The
> wire was coiled inside a drum and pulses were sent down the wire. The
> 'read head' was a magnetic pickup at the other end of the coil - and
> access time was
On Sun, Oct 20, 2019 at 10:45:27AM -0400, Nigel Johnson via cctalk wrote:
> I remember an IBM engineer talking about this at our ham radio club. The
de VA3DB
> wire was coiled inside a drum and pulses were sent down the wire. The
> 'read head' was a magnetic pickup at the other end of the coi
I remember an IBM engineer talking about this at our ham radio club. The
wire was coiled inside a drum and pulses were sent down the wire. The
'read head' was a magnetic pickup at the other end of the coil - and
access time was however long it took the pulse to arrive at the other
end. There
search for NDRO and thin film memory
Univac used it in their commercial and military computers
On 10/20/19 7:35 AM, dwight via cctalk wrote:
> I was just listening to a video on the Voyager space craft. It used an
> interesting type of memory, called magnetic wire memory. There is only a
> littl
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