Calculators and adding machines. Layout of function keys on adding machines.
NORM herausgegeben am 31.5.1977
Designation standards: BS 5478-2:1977
Note: UNGÜLTIG
Publication date standards: 31.5.1977
The number of pages: 6
Approximate weight : 18 g (0.04 lbs)
Country: British technical standard
Kategorie: Technische Normen BS