Glass memory?

On 2022-Apr-01, at 5:54 AM, Paul Koning via cctalk wrote: Are you alluding to a question of actual use in a practical large-scale implementation? Tunnel diodes did work as storage (state-holding elements), at least on a small scale. I have a frequency counter that uses a 5-stage tunnel-diode counter for the first high-speed counting stage. That is the most tunnel diodes I've seen in use in one place. As two-terminal negative-resistance devices, I wonder if there were some design attempts to put them in a matrix, something along the lines of providing the matrix axes in whole with a 'holding current' to retain state, along with 2D addressed R/W. Cryotrons I only know of from reading the period 'laboratory announcements', don't know how far they got in any practical use.