Re: Rarest Card

[larwe <zwsdotcom@gmail.com>]

On Oct 19, 3:03 pm, "Michael J. Mahon" <mjma...@aol.com> wrote:

> Some of you may remember that magnetic bubble memory (in which small
> circular magnetic domains ("bubbles") circulate on a thin garnet
> substrate under the influence of external magnetic fields) were
> expected to eventually replace magnetic disks in the late 1970s!

I still have a Nicolet storage scope that uses bubble memory cards. I
also seem to recall building a bubble memory storage device for my
VIC-20, with my father's help. I don't remember where he scavenged the
memory device; it was probably a circuit from a magazine, and a
surplus bubble chip.