I recently moved to Eindhoven and have been meaning to get to the museum in Helmond. This has prompted me to make the trip this weekend!

The DEC barn seems interesting, but I don't gather where it is located or how you can visit it?

"SAMENGEST TEKEN" is most likely an abbreviation for "SAMENGESTELD TEKEN". I guess it's a translation of "COMPOSE KEY" and they ran out of rub-on letters somewhere.

Damn, I just came back from a trip to Amsterdam…if only I’d known

Do these still exist? How are they funded?

I went to the Bonami SpelComputer Museum in Zwolle, I spend > 5 hours there. Loved it, you could touch everything, oh the long lost satisfaction of putting in a real floppy floppy! I played pong, I played on an MSX (used to own one), the NES, old Sega's, Atari's. My son also loved it, I parked him at the Playstation's and Xbox's at the end, then did another round, starting from the 60's Star Trek style computers to the now. At the end we played some pinball machines, and some old arcades as well.

The whole place felt like a drab 80's office, but also felt like a lost home, it had a special charm.

R.I.P. Living Computer Museum (yes I am aware of its formal name). They took such good care of the systems there, and basically everything could be played with. It's technically not the only museum like it around Seattle, but it was incredibly memorable.