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

From: Mike Ford <mikeford_at_netwiz.net>
Date: Thu Apr 22 12:30:30 1999

>> > Actually I was thinking closer to a solenoid, and the whole array with
>> > manual buttons that would need to be pressed, very hands on and see what
>> > happens.
>
>The logical error there is that a torid is a closed field and hence cannot
>operate a solinoid (open field). The magnetic path of a core is a closed
>loop.

See I am learning something again and we haven't even built anything. ;)

Cheesy, but we could just use a parallel circuit for the indicator, not my
preference though.

What might a drop of ferrofluid do if placed on a core?
Received on Thu Apr 22 1999 - 12:30:30 BST