"First microprocessor/computer system in most peoples homes."
In UK. My Apple II was bought in 1979. Other PCs - kit or ready-built - were also available. Our local TV shop started selling Teletext devices in 1981 - IIRC starting with a front-end converter box.
Both innovations appeared to be leading edge domestic devices. It was a surprise in IIRC 1982 when it was revealed just how many European countries also had Teletext services.