LOL, yeah...people still use them too, I guess (least at my old job they did). Probably more for school, or somewhere you can't or don't want to bring in a full computer?
I used to do the calcs by hand (to understand them) then make a spreadsheet for interest calcs, but now with online calculators and built-in software...
But, guess it's like the scientific calc. I use mine daily at work even though the internet and computer are right there; just makes it easier when you're doing long problems, I suppose...
[EDIT - the old HP's can be worth some money, btw /ubbthreads/images/graemlins/wink.gif ] I have another one from the mid 80's like this:
still smells new in the box too /ubbthreads/images/graemlins/smile.gif That one I'll ask a bit more for though...