The HP41C as a prototype for an IoT device

When my brother André Bartels went to university at Maties, he arrived back with an HP41C calculator. It was programmable and I was hooked. In my first year at university I also bough myself one, a 41CV. The best thing about the calculator was its programming language called FOCAL. It allowed the creation of some decent apps. The one I recall the best was a fuel management programme that was similar to the fuel stats now displayed by the digital dashboards on most modern cars. In those days I had a Toyota Corolla and would drive long distances between Stellenbosch in the Western Cape and Howick in Kwazulu-Natal. I would have all my fuel statistics on the HP41CV.

Read the article over at LinkedIn here.