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  • HP 35s Scientific Calculator
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HP 35s Scientific Calculator

by HP
| 10 answered questions

List Price: $59.99
Price: $55.74 & FREE Shipping
You Save: $4.25 (7%)
Only 3 left in stock.
Ships from and sold by AZPerfume.
  • 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
29 new from $51.47 1 used from $49.99 1 refurbished from $34.99

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Frequently Bought Together

HP 35s Scientific Calculator + Useful Equations for HP 35s or HP 33s Calculator for the Civil PE Exam
Price for both: $134.02

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  • Buy Used and Save: Buy a Used "HP 35s Scientific Calculator" and save 16% off the $59.99 list price. Buy with confidence as the condition of this item and its timely delivery are guaranteed under the "Amazon A-to-z Guarantee". See all Used offers.

Product Details

  • Product Dimensions: 6.2 x 3.2 x 0.7 inches ; 3 pounds
  • Shipping Weight: 12 ounces (View shipping rates and policies)
  • Shipping: Currently, item can be shipped only within the U.S.
  • ASIN: B000TDRHG8
  • Item model number: F2215AA#ABA
  • Batteries 5 Nonstandard Battery batteries required. (included)
  • Average Customer Review: 4.2 out of 5 stars  See all reviews (506 customer reviews)
  • Date first available at Amazon.com: April 18, 2006

Product Description

Product Description

Get professional performance from HP's ultimate RPN scientific programmable calculator-ideal for engineers, surveyors, college students, scientists and medical professionals. Scientific projects require accuracy, functionality and dependability for success. The HP 35s scientific programmable calculator delivers them-and more-with features that include 30KB user memory, your choice of RPN and algebraic entry-system logic, a convenient two-line display, and the time-saving HP Solve application

Amazon.com

Ideal for college students, engineers, surveyors, and medical personnel, the HP 35s scientific calculator offers calculation versatility in one economical unit. For added versatility, the HP 35s lets users choose between RPN or algebraic entry-system logic (no other scientific calculator offers both). It also features a large, two-line alphanumeric display to view entries, results, menus, and prompts with ease. The display also sports an adjustable contrast feature, making it ideal to use both indoors and out. A robust library of 100+ built-in functions and constants also comes pre-loaded for immediate use right out of the box. A robust memory ensures even the largest calculations go smoothly and quickly, and more than 800 independent storage registers allow users to store an equation, then use it again to solve any variable, or employ the equation in conjunction with any of the 100+ built-in functions. The calculator is backed by a manufacturer's 1-year limited warranty.

What's in the Box
HP 35s scientific calculator, batteries, user's manual, and premium protective case.

Customer Reviews

Feels like the 15c, well made and the case is so nice.
B. I. Schumacher
For new calculator users and students, I'd think the 35S is a great calculator, and you can use RPN or algebraic, so that is great.
Audio Guy in NC
+The keys themselves have a nice hard touch to them with a "clicky" feel when pressing on them.
G. Elias

Most Helpful Customer Reviews

346 of 356 people found the following review helpful By StevieQ on January 16, 2008
I am a diehard RPN and HP calculator fan. I bought this calculator for the PE exam. HP calculators I've owned include HP41c, HP42s, HP12c, HP17BII, HP19BII, and HP33s. The HP35s is basically an HP33s with most the ergonomic design flaws and quality issues of the HP33s fixed, along with a few added enhancements. It's what the HP33s should have been in the first place. But, along the way, it also introduces a few design flaws of its own.

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.

Obvious minuses:

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.
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149 of 156 people found the following review helpful By David Simpson on September 5, 2007
Verified Purchase
This is a very nice high-quality scientific calculator from HP. The overall design and capabilities are similar to the HP 32SII (equation solver, unit conversions, etc.), but with several enhancements.

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.
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102 of 110 people found the following review helpful By Bob Manson on October 16, 2007
The 35s is the most interesting calculator HP's produced in a while. While I'm sure their intended market is the legions of dedicated HP users, even if you're not a lover of antiques you should give it a look.

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.
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