The TRS-80 was produced in many different guises (here's
one of them) ... and it was also much cloned!
In its day, it was probably the most popular, well-known home computer in the world. We're talking now about the late '70's let's not forget. I never had one myself, preferring to struggle on
(for some perverse reason ... but more than likely cost
I should imagine) with stuff like Sinclair's offerings ... and later, of course, the magnificent BBC Micro!