Anita MK-8 Simulator
A "full keyboard" calculator that simulates early electronic calculators. It works by counting pulses for adding and subtraction. No CPU or Arduino etc. All Electronics are my design.
A 3D printed mechanical calculator, my design, inspired by Pascaline calculator. It features the "propagation" of carry mechanism.
An electronic simulator of the famous Facit C1-13 calculator. My design.
A 3D-printed mechanical calculator that smulates early mechanical calculators (Pascaline). Courtesy of José Campos, the original designer.