Which HP12 to buy?

[Maximilian Hohmann]

Hello!

It's probably a matter of taste, but I would look for an original one from the 1980ies. With a little luck you can find one that still runs on it's first set of batteries and will continue to do so for years to come. The price to pay is lower speed comparerd to the later ones, but who cares? There are far better tools for calculations that require quick results.
Anyway, compared to other calculators, the HP-12 can be found so "dirt cheap" that you can simply buy one of each series and compare them for yourself.

Regards
Max