math-meets-machines

[Thomas Puettmann]

Hi all,

I am a long-time occasional reader of this forum and want to express my thanks to all the contributors. I think the forum and the main site hpmuseum.org itself are a great source of useful information and also quite entertaining. I benefitted several times of them.

I own a HP 35 (inherited from my father), two 11Cs, a 41CX and a 42S. After the 42S, I stopped buying calculators since it became pointless in my opinion. I now exclusively use one of my 11Cs. For any task beyond its capabilities I would use a computer.

I have recently started a long-term project called math-meets-machines where I develop and document models in which math and mechanics interact exemplarily in an instructive way. The first two models are actually mechanical calculators that share a lot of properties with our beloved HP machines: They are durable, reliable, have a carefully designed user interface, non-algebraic entry and run forever without need to change batteries. If you are interested, take a look at http://www.math-meets-machines.de or at my YouTube channel.
So far, there are only two models on the site but many more already exist. They will be posted one by one as soon as I get the time-consuming documentation done. I would be glad if at least some people here like these devices!

Thomas