This TRS-80
I had a TRS-80 Model 200 for a while, so this brings back some weird memories. I regret getting rid of it, really; it'd have been fun to have it around to bring to coffee shops for writing sessions now.(Possibly) interesting trivia: the linked article mentions the AP used a typesetting system called ATEX. This was a big dedicated terminal/server system that basically used plain text with  markup, similar to troff or LaTeX, although the markup was entirely different. The team that created ATEX split up and created two different pieces of software, both inspired by ATEX. One team created a DOS word processor called XyWrite, which was used by some major publications well into the 1990s and possibly into this century. (IIRC, it was also used to issue US Supreme Court rulings for many, many years!) The other team created PageMaker, one of the very first GUI desktop publishing programs. To the best of my knowledge, every version of PageMaker -- as well as the first couple of versions of its successor InDesign, and contemporary versions of its major competitor, Quark XPress -- could natively import XyWrite files. (While XyWrite is no more, it has its own successor program, an academic-focused Windows word processor called Nota Bene.)