eighties nostalgia

I found these on the top shelf on one of the labs at work. That little logo on the right says British Broadcasting Corporation. Yes, they're BBC computers. I haven't seen one of these since the eighties! Brings back good memories of playing Space Invaders, Pacman and the like. I also remember a curious little game called Frak - you controlled a caveman wielding a yo-yo which he used to kill all the baddies. Surreal, huh?