I use HP calculators every day. 12C for most common tasks, 25 in the workshop (it can be operated one-handed!), 15C or 50G for more complex tasks involving units.

Calculators are very useful, using them is a forgotten art. While it no longer makes sense to plot anything on a calculator (I use Mathematica for that), it is still a great tool.

I have a 16C and I use it, but only when developing embedded software where I need to wiggle bits. It is very useful for that, especially with one-key switching between bases (HEX/BIN/DEC).

I can't answer your question regarding the 16c, but the 12c is still the most convenient tool I have for compounding maths.

I can technically do the same thing with Emacs Calc, but there's something about the physical layout of the buttons that just makes sense. I suppose I could also use a software simulator of the 12c, though.

Err me.

I have a few 42S though so probably don’t need it.

Edit: also three 15C and some slide rules. Think I have a problem.

> Who is the audience for this?

People on big tech salaries with too much money.

If I saw an original one for sale for 10 credits or less I'd probably buy it as a curiosity piece, but no more than that. I do use a desk calculator but still have my trusty Casio that I bought over 20 years ago.

It’s not a fake, it is made by HP. Also, it has value as a calculator, not just nostalgic sentimental value. It works just as well as the original.

I own one because a while ago I bought, one by one, iconic world changing calculators to collect. I like having physical history. This re-release seems like a very nice bookend to that collection.