On 04/18/2019 04:49 AM, Brent Hilpert via cctalk wrote:
It's a 4-wire 3D planar array. By topology and
construction I would guess it date it from the 60s.
Make that EARLY '60s. As
soon as somebody figured out that
you could combine the sense and inhibit wires, everybody
immediately went to 3-wire planes.
Jon