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

From: Allison J Parent <allisonp_at_world.std.com>
Date: Thu Apr 22 18:39:21 1999

<My first thought was something like a small compass near each bit. I want
<to avoid lights since I think they are less engaging, less an indicator
<that something has happened. Ideally this should be an attractive looking
<toy, that sparks curiousity.

The ferrite would not show enough external field change to be a reliable
indicator. However when the wires were driven they indeed would!

Allison
Received on Thu Apr 22 1999 - 18:39:21 BST