I in the early 90s I used to work for a company that wrote Technical Analysis trader's software for Reuters, and in the mid-90s worked for their competitors Dow Jones Telerate also on trader's applications. As far as my hazy memory can recall, traders using Reuters feeds in the late 1980s-early 90s timeframe generally used the bog-standard Reuters Terminal which was a monochrome green screen console with a keyboard laid out in a rectangular fashion with some coloured keycaps. Sorry I can't find a photo of it through Google right now. Later the ART Advanced Reuter Terminal was used. In 1991 / 1992 our TA software ran on PC-AT 286 boxen (and the ART) running a custom multitasking windowing system that looked very, very, very similar to the Windows 2.0 UI and took the Reuter feed to plot realtime graphics. I have a product brochure we released, with screenshots somewhere in my collection.
At Dow Jones Telerate in 1994 or thereabouts we also did analytics software on Win 3.x I recall we did have a Sun workstation in the office but that wasn't used for anything trading-related. Generally the Telerate boxen were generic 386(? from memory) PCs with a hard drive and 3-1/2" floppy, and fitted with a custom Telerate feed card, and they also had a bunch of Intel Panthers (circa 1991 or 1992 I think). A lot of old gear was chucked in the mid 90s, I still have a Panther I collected (a really beautiful pizza box machine, absolutely lovely quality hardware!) and one of the custom feed cards somewhere. All this equipment was beige in colour, except I think the old RT was black or some other dark colour.
At the time Bloomberg was one of our competitors, they must have had similar capability equipment.
Steve.