this post was submitted on 17 Jul 2024
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HP's most accurate financial calculator, oddly enough, and despite only returning the ceiling of solve-for-n.

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[–] [email protected] 6 points 3 months ago (2 children)

My dad was a surveyor almost my entire life, he always had this (or a very similar model) in his pocket or on his desk.

[–] millifoo 4 points 3 months ago (1 children)

As a surveyor, he probably had an 11c or 15c (the 12c is the financial version of the Voyager series).

Aside: Swissmicro sells a series of voyager clones with modern hardware:

https://www.swissmicros.com/product/dm15l

More info on the original HP calcs:

https://en.wikipedia.org/wiki/Hewlett-Packard_Voyager_series

[–] [email protected] 2 points 3 months ago

I looked at an image of the 11c, that was it for sure.

[–] [email protected] 2 points 3 months ago

That's lovely - these calculators are very 'dad' style to me also (though my dad had a 70s style Casio). There's something about the voyager HP calculators with their landscape format - they are really satisfying to use, I can see why he kept it on him!