Hi, I'm João de Deus from Portugal.
I'm a electronic engineer / c++ developer.
Way back when I was a student I enjoyed messing around with graphs.
I have developed a graphic scientific calculator for desktop (win, linux, mac) and mobile (android). This forum has a section about other calc related projects, maybe I can show it there or that is just for software for TI, Casio and others ?
Nice to meet you guys