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

From: Allison J Parent <allisonp_at_world.std.com>
Date: Mon Apr 26 18:18:53 1999

<OK, how about it. Put a ring of compasses around the wire with needles str
<enough magnetised that they will stay pointing N-S around the ring regardle
<the Earth's field.
<
<Can you then flip them with a current? A very good visual demonstration of
<core works!

Yep, That would be good to watch but that's really a demo of the fields
around conductors (imporant building block).

Allison
Received on Mon Apr 26 1999 - 18:18:53 BST