Addo

Addo-X addo-x_mod.20e_31528_kuva_104_pieni Addo #3-16760

A.B. Addo, Malmö, Sweden

The company was founded by the Swedish dentist Hugo Agrell in 1918. In 1966 the company was bought by by Facit. The full-keyboard calculators had the name Addo and the 10-keyboard calculators Addo-X. A subsidiary of Addo was Dixma (see Dixi).