Madge blunders back into office work having been out of the loop for too long and finds her technical skills are sadly lacking. Modernisation! *curse, spit!*
That said, semi-digital typewriters would already have been fairly outdated in 1986. You'd be better off running a Commodore 64, BBC Micro or Acorn Electron hooked up to a dot-matrix printer.
It's possible the model seen in the video is a Phillips something-or-other since they are referenced in the credits of this episode and they did produce this sort of thing at the time. I'll have to research this further.
Snipped from episode 252 (original Aussie air date, 13/05/86).