Focus FK-5001 that I cleaned up and converted to USB. White Alps, original double-shot ABS caps. The calculator works.
EDIT: This fucker developed a short within like an hour of my closing the case back up. Now I have to either use my multi-meter to learn the entire 130-key matrix, or I have to desolder all the switches and kill the calculator function to turn the board into a hand-wired custom, though that would allow the left side function keys to be different from the top-row ones. Sigh.
Why would you event need a mouse with that many arrow keys!?
This thing was designed in the waning days of DOS. They probably thought the same thing.
I wish they made keyboard likes this still The layout is god tier
Unicomp still makes this extra-chunky layout in a buckling spring: https://www.pckeyboard.com/mm5/merchant.mvc?Screen=PROD&Product_Code=UB40B5A
Thats friggin dope, thanks for letting me know!
Or maybe you wanna get real crazy…