Casio SL-800 Film Card Registered as Essential Historical Material for Science and Technology by Japan's National Museum of Nature and Science | Technology | Japan Bullet
Calculators and the MoMA in New York - Calculator blog - The Calculator Store
Braun ET 22 Calculator by Dieter Rams and Dietrich Lubs, 1976 | Calculator design, Braun design, Dieter rams
Mario Bellini. Logos 50/60 Electronic Printing Calculator. 1972 | MoMA