Reviews and Problems with HP 9s Scientific Calculators
Showing 1-10 of 20
Michael Colpetzer, Amazon
12 January 2014
Summary: Good calculator, NOT RPN, that's what I was looking for. I knew the price was too good to be true. I just assumed with an enter button and no equal button it was. I was not deceived by the seller. Just didn't do my research.
Summary: I wanted tactile keys (feel the click) on my calculator. Hp is the only company I know of that does this. It helps to let you know that you have pressed a key without looking at the screen. The price of this HP 9s was very low and the number of functions exceeds the needs of the normal user. I am very happy with this purchase.
Summary: Reverse Polish Notation (RPN) calulators use an <enter> key and do not have an <=>. Look closely at the image for this product: This calculator has an <enter> key and does not have a <=> key, but it's not RPN. The owners manual is useless (written in Spanish). I was so excited to get an affordable RPN calculator and I deflated like the Hindenburg when I figured out I got rooked.
Summary: because is cheaper tha the casio and texas instrument and work well for a bargain if you need for continuously think and buy someone like TI85 or casio is better for graphics and the display is incolor this one is a simple...
HP 9G: A very sorry excuse for an HP graphing or scientific calculator
Ann E. Revelle, Amazon
28 December 2009
Summary: I purchased this unit with some high hopes directly from HP a few years back. At that time it was on on sale far below Amazon's going price range. I believe it was priced so low because 1) they/HP had way too many of these units in stock and 2) because a decision had consiously been made by upper level HP management to get rid of this entire line of Algebraic-only type calculators (like the HP30s, etc.).
Summary: After many years of relying on my HP graphing calculators (48SX), I had to scale down to a one-line calculator for use in one of my exams. HP sets the standard for engineering calculators. Unfortunately, the graphing calculators are a little too powerful for use in certain exams, since you can almost program them to do the work for you. My professor specified "1 line calculator ONLY" for the final exam.