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HP 35s Scientific Calculator
|Price:||$45.99 & FREE Shipping on orders over $49. Details|
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- Robust and economical scientific calculator
- 100+ built-in functions; 30 KB memory with 800+ registers
- Supports RPN and algebraic data entry
- 2-Line, 14-character display
- 1-Year limited manufacturer's warranty
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This item: HP 35s Scientific Calculator
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|Sold By||Amazon.com||Amazon.com||Amazon.com||HyperTech Bargain|
|Color||Information not provided||Black||Silver||Information not provided|
|Dimensions||0.72 inches x 6.22 inches x 3.23 inches||1.4 inches x 9.7 inches x 6.5 inches||1.14 inches x 9.64 inches x 5.8 inches||5.89 inches x 0.77 inches x 3.24 inches|
|Item Weight||3 pounds||0.4 pounds||0.38 pounds||0.33 pounds|
|Size||1 - Pack||Handheld||3 1/8 x 6 1/2||3.04 x 0.59 x 5.79 in|
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What's in the Box
HP 35s scientific calculator, batteries, user's manual, and premium protective case.
Top Customer Reviews
Obvious pluses: The keys on the HP35s feel almost like the ultra high quality keys on the HP41c, not entirely there because the ones on the HP35s are flatter and have less travel distance, but very close. However, unlike those on the HP41c, some of the secondary colors on the keys are only painted on. How long would the paints last? It comes with a super nice semi-rigid vinyl case. The LCD display is fragile, but it seems to be dust-proof and has excellent contrast. The built-in metric/imperial conversions and constants library are also nice. One major enhancement over the HP33s is the ability for a program to refer to a line number instead of a label name during conditional branching. This feature allows the writing of programs that don't use up a lot of the precious program labels. The equation solver is quite powerful. It comes with built-in equations for solving 2x2 or 3x3 simultaneous equations.
One major annoyance to me is that the HP35s does not have scrolling comma separators as I enter a long number. So, if I enter 12000000, I have to hit the ENTER button to see it displayed as 12,000,000. The lack of real-time, scrolling 1,000 separators makes it very easy to make data entry mistakes. The HP41c, HP42s, or even the lowly HP33s have scrolling commas.Read more ›
Like many recent HP models, this calculator can work in either RPN or algebraic mode, but I use only RPN. The keyboard layout has been well thought out, with most functions being quickly available directly from the keyboard and a few lesser-used functions available through menus. The keyboard has a traditional HP layout and colors, and the keys have a nice positive feel. A very thorough and well-written printed manual is included.
A new feature with this model is that each level in the four-level stack may hold a real number, complex number, or 2- or 3-element vector. Complex numbers may be entered very simply using the "i" key (or "theta" key for polar form); vectors are entered using square brackets. This design makes it very easy to manipulate complex numbers and vectors.
The calculator includes 30 kB of memory, which is enough for over 20,000 program steps. There are 26 main memory registers (A-Z), six statistical registers, and 800 more memory registers available through indirect addressing. Another new feature of this model is TWO indirect registers, (I) and (J).
A few cons: With previous HP calculators, there was a shortcut for entering exact powers of 10: for example, 10,000 could be entered as "E 4". For some reason HP has dropped that feature on the 35S, so you now have to enter "1 E 4". Not a major drawback, but kind of annoying since I used that shortcut a lot on previous models. Another nit is that the function to convert HMS to decimal hours is labeled HMS-> instead of ->H, which I haven't gotten used to yet.Read more ›
A definite improvement on the 32sII, and in general I would recommend it over purchasing an overly-expensive used HP. While the hardware isn't quite as nice the 35s should have a much longer battery life, and has more than enough memory to hold any reasonable number of programs.
It's physically larger than a 32s and it's not really "pocket-size". Yet it's not that big compared to modern scientifics and the larger display is worth it.
It feels very solid, except for a battery door which pops off a bit too easily. Lithium coin batteries are so much easier to deal with than watch batteries that I'll happily accept the tradeoff.
The keyboard is slightly soft compared to older HPs but that's been easy to get used to. It has a definite click, good-sized keys with a large Enter key, and should seem quite familiar to HP users. Unfortunately it uses painted-on key symbols which I suspect will show wear rather quickly.
Crisp display, easily readable from practically any angle. A huge improvement over the LCDs in HP's older models.
It has RPN and algebraic modes, as well as an EQN key which allows algebraic entry while in RPN mode. Most keyboard functions have an EQN/ALG counterpart, and while algebraic formulas can be used in programs you'll still need to use RPN for conditionals and loops.
The excellent mixed-base number support is a pleasant surprise. In algebraic mode you can easily enter a calculation in mixed bases without changing the current base.Read more ›
Most Recent Customer Reviews
Good civil engineering calculator. Twice as fast as a non RPN calculator as parenthesis and storing in memory is automatic if done correctlyPublished 7 days ago by SL
I got this to replace a dilapidated 32sII. At first I did not like this version. The key placement is different, and it feels much bigger. The two line display is weird at first. Read morePublished 8 days ago by Kelly Black
great calculator, RPN mode is kind of hard to get started with but now i cant use a calculator that doesnt have RPN. Read morePublished 15 days ago by Gane Mccleave
Great calculator. works well. it is a reasonable current replacement for HP15c. Keyboard good.Published 17 days ago by c
It is extremely fast to type numbers into, much faster than some texas instruments equivalent calculators. Read morePublished 1 month ago by Andrew Ziehm