The HP12c is the longest running product of HP, made without interruption from 1981 until today. It has been the standard calculator model in the financial world since then. Its calculations are taken as "true" on financial discussions. The latest version is 150 times faster than the original model, but still all programs made are fully compatible.

We thought it deserves its own space in our web - there are many users that still keep it on their pocket or their table for everyday use, and that would profit from using it to its limits.