Does anyone know it? Is there a way to create it?
Find the shortcut to calculator in the Start menu, right click and select "Properties". You can enter any shortcut you want in the "Shortcut Key" field.
Well if you put it in your quicklaunch bar, the items there automatically get a shortcut (well the first 10 anyway) of Windows + #
Not a true shortcut key combination, but a comfortable way to do it anyway.
win-key+r [for the run window], type calc and press enter.
Might seems like a bit of work relatively for a shortcut, but if you're not completely rubbish at typing, it's easy and quick (and if you use the method for other programs you really get used to it).
I know I sound like a fanboy, but I haven been using Microsoft keyboard for 9 years. I know it doesn't solve your problem in software, but all MS keyboard have a dedicate calculator button which I found very useful from time to time.
A year or so ago, I read about an HP calculator that was completely reprogrammable, down to redefining the keys. And I think it was of relatively recent vintage.
I can't figure out which one it was, because when I search for programmable HP calculator, I get the usual suspects, which are programmable in the way calculators are traditionally programmable.
What was that calculator? Was I just dreaming?
Well, the description of HP 49g+ says that "...and with every key being user definable, you can swap out lesser used functions...", perhaps that's the one?