I have, somewhere, one of the old epson calculator/pocket computers that uses those things. I think. I can't instantly lay hands on it, but I've seen the thing around recently, and I'm pretty sure that the cards are the same. That might allow you to write arbitrary data to the card in question.

I'm also fairly sure that the cards had a very simple static memory interface, with address, data, control, and power pins from te internal chippery simply brought out to the edge connector. Farnell sell one that looks very very similar, although it has 38 pins and your one seems to have 40. Given the pinout, it would be easy to make an adaptor to allow a PC to connect to one of the things via the parallel port.

pca