Plustron/Plustronic
Plustronics Ltd.
Newcastle-under-Lyme, Staffordshire
UK

1970s Marketing company that branched out into calculator-like game and educational models. It appears that the brand was common in the UK and Germany. The Plustron brand also covered radios, TVs and other electrical goods. Plustron seams to be the Singapore's division of Plustronic.

Source : Vintage-technology.info

More informations