This calculator was announced some time in 2007 (I believe) as a anniversary celebration for the original HP 35. Top subscription boxes – right to your door, See all details for HP 35s Scientific Calculator, © 1996-2020,, Inc. or its affiliates. Choice between RPN and algebraic entry-system logic modes. Tried TI and Casio scientific calculators but they were just inconvenient.

I didn't see the point of buying an expensive HP until an instructor showed how he could get the square root of -1 on his calculator, and my Casio gave an error.

The second one had the same problem, but on the "C" (which is also the on/off) button.

A comparison to recent scientific calculators from HP and other manufacturers is also logical.

It does everything I'd want to do on a calculator that's short of what I'd want to model on a full computer system. The 300 is pretty much the bottom of the line and not like a real HP. The algebraic entry mode has not been tested because I purchased this specifically for the RPN operations. If you prefer a device that can provide plenty of programmable scientific functions, this can be a good option. Reviewed in the United States on January 5, 2018. It's obvious that the new HP-35s begs comparison with the original HP-35. The screen is also clearer and has larger type. It is more old-school compared to more modern and advanced calculators like Ti's Nspire line, and when using any scientific calculator there is a learning curve which you can get an idea by looking at the size of the manual (the 35s manual is over 300 pages). They made it well. The case seems to differ between the two packages, with the larger one containing a rather solid "hard" case, and the smaller package appears to contain a soft-sided case. The HP-35s is a dramatic update to the original HP-35. Which Is The Best Graphing Calculator On The Market, Review Of TI 83 Calculator: Advanced Graphing Calculator, How To Use The Graphing Calculator TI-84: Expert Techniques, The TI Nspire Calculator Online Guide: An Introduction, Arc Length Calculator: Finding The Necessary Values, An A+ Tool: Review Of The HP Prime Graphing Calculator, Asymptote Calculator For Android And Apple Users, 7 Best Calculator Watches for the Nerd Inside, What Is Sigma Value And The Best Sigma Calculator, Step By Step Tutorial For Linear Regression Calculator, Calculators 101: How To Find The Best Calculator For Every Budget. The keys also have a different feel to them too and the user's manual comes on a CD rather than in hard copy so, if you want to sit in a chair and fiddle with it to learn it, you have to print it out. I've seen the HP-35s in two different retail packages. If this one dies an early death, I will be done with this HP model and maybe HP altogether.

Keys have a tendency to skip entries during fast keying. You just have to simply perform the calculation in the order that is needed. With this reason, finding the right option that suits your needs seems to be an overwhelming task. It may not be too much but if you solve plenty of equations, this saved strokes will give you more time. One convenient characteristic: it uses two 2032 batteries. It is a disgrace.

It would be great if the firmware could be updated, but that's technically impossible, so we're locked into "it is what it is", bugs and all, forever. There are also 30,000 bytes of program memory that is more than enough to provide you the needed program steps. Hidden in the back of the quick start guide, under Additional Resources, is the statement that if you simply call HP and ask for a printed manual they'll send you one. Quick shipping and as described. I cannot trust a calculator that might miss an input like this. However, please note, HP no longer provides the User Guide since these were produced some time ago. I've been using HP Calculators since the 1980's and have owned several through the years including the HP-55, HP-45, HP-35, HP-80, HP-41C, HP-15C, HP-80, and HP-12C. Unfortunately it seems to be declining in popularity (and never was that widespread to begin with). It's a three hundred plus page booklet. Reviewed in the United States on February 7, 2020. Yes I do have 64-year-old eyes now, but when I use my husband's old HP-11C I have no difficulty at all reading the numbers. Your recently viewed items and featured recommendations, Select the department you want to search in, Five Stars for this Calculator -- with a caveat, Reviewed in the United States on November 4, 2018.

Now that I have this, I find that I use this a lot more than my 50g.