I recently picked up this keyboard from a surplus place, and it has a DE25 connector. It has no brand name that I can find or anything else that would point to a manufacturer. I love the feel of the keyboard and would love to find a way to use it for projects.

My primary question is whether anyone can confirm if the connection is likely parallel or serial? (Or any other info about it) I'm guessing this is likely an "ascii" keyboard as they used to be called and the connection is likely parallel. (Basing that on the repeat keys and separated CR/LF keys.)

Then ultimately I'd like to find a way to use this with a modern linux setup so I'd love any tips on how to do that, even if potentially I need to wire in a keycode decoder of some time. The keyboard has a great feel, with two "locking" keys and just feels fun to type on. But determining where to start with the interface is the first piece.

Question for the group:

I found a data general one pharaoh 2T laptop in very good condition, with lots of cables and parts and the original bag in my grandfathers attic (he passed). If this is worth something, I’d like to sell it and take the family out to a nice dinner (grandpa’s treat), so what is something like this worth? I can post pictures of everything in there but tbh idk anything about vintage computer stuff. Thanks!