33s Scientific Calculator

The calculator is easy and fast for my son to use for his math club activities. No reported problems and he feels comfortable with all the functions of the calculator.

Unfortunately the display and small keys with triple data are both difficult to read for the over 40 set. To make much use of it I had to tilt the calculator at a certain angle and have the lighting just right to easily read the keys and display - other wise it was work. A graphing or $12 calculator does not have this difficulty. If I were 20 and an engineer this would be quite good but I would still using a programmable graphing. As a math professor I have used most types of calculators and would say this has very limited appeal but consider the rpn feature fun. So if you need a lot of horsepower in a small light package, don't need graphing, and have young eyes this is great. Some of the more expensive hp graphing cases are very poor quality (china low end) and the displays are the early lcd which are again hard to read. Aloha,

Awesome for those classes that don't allow you to use graphing calculators. Very easy to program, nice case. I did need to review the manual before I knew how to evaluate 2+2 as this is my first HP. There are still a ton of features that I don't know how to use. The book is about 2x the size of my TI 89's book. I would definatly recomend this calc for engineerin/surveying students.

Time to buy a new one after just 2.5 years on a desk. The decimal point & "8" keys work intermittently. The springback device seems to have worn out - those keys jiggle when you rock it back & forth. Not the quality I had in my rugged old "Made in the USA" HP-21 & HP-33E - they lasted >10 years. My HP-11c (sideways kind) lasted 15 years in a shop environment. This one seemed kinda cheesy-plasticky when it was new - I guess first impressions are correct. Good Price & Quick delivery from Wally World online, though. I think I'll get another model (HP 35s) from here again.

I have a couple of HP calculators and I am a big fan of RPN entry. This calculator is nice because not everyone in my family likes RPN and they can input using algebraic format too. I like to solver and programming features.