Chuck Guzis wrote about core rope memory:
...but then there would be no need for sense
amplifiers for this
project, right? One could read the core visually,
Not really. You'd have thousands of very fine wires, all looking
identical, that pass through some cores and go around others (on average
perhaps 33 through each core), and packed incredibly densely. Even with
very high resolution scans from multiple angles I don't think you could
expect to extract the data visually.
If you want to try the experiment, get the control store from a PDP-9
(DEC G920 module, 64 word by 36 bit) or the control store from and HP
9100 calculator (09100-69501 for 9100A, 09100-69551 for 9100B, either 64
words by 29 bits). Those should be much easier to read, as they didn't
have to be packaged at maximum density for use on a spacecraft. I've
looked at the 9100 control store module a few times, and I think reading
it electrically would be *much* easier than trying to do it optically.
Eric