How scarce (valuable) is core for the PDP-8?

From: Merle K. Peirce <at258_at_osfn.org>
Date: Wed Apr 21 07:54:49 1999

On Tue, 20 Apr 1999, Allison J Parent wrote:

>
> <One plastic box is labeled "Univac memory elements" and has a small sample
> <of 3 size cores. The largest is about 1mm O.D. and the smallest is less
> <than half that size. They look very fragile as the I.D. is almost as large
> <as the O.D.
>
> Those are about the size of the 8E cores.
>
> <The other is a "Indiana General 15 mill memory plane" I guess the cores ar
> <15 mill diameter. There are 16 cores wired as a 4x4 plane. The wires are
>
> Big fat ones... not really. Those planes would be easy to drive and
> understand. that would be one I'd love to try.
>
> <much smaller than 30 SWG (about 28 AWG). I would say much smaller than 50
> <(either) gauge, I need a magnifier just to see them.
>
> I'd have guessed thinner than #40.
>
> Allison
>
>

M. K. Peirce
Rhode Island Computer Museum, Inc.
215 Shady Lea Road,
North Kingstown, RI 02852

"Casta est qui nemo rogavit."
              
              - Ovid
Received on Wed Apr 21 1999 - 07:54:49 BST