Desktops Servers Electromechanical Computers Laptops Printers Others Our Friends Abacus Addiator Arithma ADDO Mod 16 ADDO-X 331 Brunsviga 13RK Brunsviga 13ZK Calculator "Superautomat SASL" Euklid Facit 1004 Facit EK Felix Mechanical calculator MADAS Mellita, Model V/16 Monroe Model L200-X Nisa PK 5 Original Produx Calculator Remington Rand Adding Machine Walther DE 100 Walther RM XxX calculator Walther DE 100 Walther Electronic AG Gerstetten , 1974 Type of memory: magnetic tape cassette Display: single-line display for command tips.