Instruct: Classify an Amazon review as either positive or negative.
Query: This Isn't the Old HP

If you like the HP RPN calculators of old this isn't for you. Of all of the HP calculators I have owned such as the HP15C, HP41, HP42S, and HP48 I don't ever recall entering complex numbers with the imaginary part first. Polar entries are reversed as well. With the large display they couldn't even figure out how to put both quantities on a single line. HP must have had much brighter engineers 20 years ago. It doesn't make sense that they decided to reinvent the wheel. But then again I guess former HP CEO Carly Fiorina's mantra was "reinvent"!A call to techinical service to see if there was a way to invert the entry mode for a Luddite like myself resulted in a conversation with a very clueless employee of 2 months. My advise to lovers of HPs old RPN calculator is take care of the one you own. If you need a PE/FE approved calculator buy the cheap Casio FX-115 and spend a day REINVENTING your keystrokes.