That's an impressive collection. I think the only one on that list I've never heard of is the TRS-80. I don't collect computers, though. I
do have a collection of old movies in Laser Disc format (those huge 30cm diameter optical disks which you can't find anymore). They were just sitting there gathering junk until, by a stroke of luck, I managed to find a working LD player at a garage sale. Now I can watch Ben Hur on my Laser Disc anytime I want.
