Gas plasma displays

They are quite expensive to manufacture and suck power like crazy, compared to LCDs. I do not know of any general purpose machines that still use them, but they are quite common in military and industrial equipment. IBM once made some awesome terminals, mostly for the 30xx mainframes. They were quite large and had a fantastic resolution - I seem to remember them being able to display four _nice_ looking terminal windows without overlap. I think this was in the early 1980s timeframe. I once saw a few at a hamfest a year or so back, but they still had hefty price tags - $200. I am sure that was a small fraction of their original cost. Incidently, glass plasma displays show that electron tubes can be made _very_ small, using traditional semiconductor etching processes. William Donzelli william(a)ans.net