I now have 35 HP related calculators on my PC...

[zswobbie1]

I'm using a little program called 'Quick Access Popup' from http://www.quickaccesspopup.com/

It gives a pull down menu when you middle click (mouse wheel) your mouse, & I've got a menu of all the calculators as well as a link to the manuals.
It just makes life a lot easier for me.

I also have a Casio FX7500, Ti-59, Sharp PC1500, Sinclair Z88 & some Russian emulators as well.