HP 35s Scientific Calculator
Brand | HEWLETT PACKARD |
Color | Black |
Calculator Type | Engineering/Scientific |
Power Source | Battery Powered |
Screen Size | 1 |
About this item
- Engineering, Surveying, Science, Medicine, Display type: LCD
- Adjustable contrast with 2 lines x 14 characters + indicators, 14 character dot matrix (5 x 7)
- SAT Reasoning Test; SAT Subject Tests in Mathematics Level 1 and Level 2; ACT; PSAT/NMSQT; AP Chemistry/Physics; PLAN; EXPLORE
- Dimensions (W X D X H): 3.23 x 0.72 x 6.22 Inch. Warranty: 1 year warranty (may vary by region)
- Built-in functions: Over 100, Memory registers: 800, Memory: 30 KB, Power: 2 x CR2032 batteries; battery life: 0.73 year @ 1 hr/day (approximately 9 months)
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Top Brand: HEWLETT PACKARD
From the manufacturer
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This Item HP 35s Scientific Calculator | Recommendations | dummy | dummy | dummy | |
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Price | Currently unavailable. | $30.91$30.91 | -5% $144.99$144.99 Typical: $151.95 | -43% $12.44$12.44 List: $21.95 | -6% $19.98$19.98 List: $21.19 |
Delivery | — | Get it as soon as Sunday, Mar 17 | Get it as soon as Sunday, Mar 17 | Get it as soon as Sunday, Mar 17 | Get it as soon as Sunday, Mar 17 |
Customer Ratings | |||||
Easy to use | 4.6 | 4.2 | 3.8 | 4.6 | 4.3 |
Easy to learn | 4.4 | 4.2 | 4.1 | 4.6 | 4.3 |
Easy to read | — | 4.4 | 4.2 | 4.6 | 4.9 |
User interface | 4.5 | — | 4.5 | — | 4.1 |
Value for money | — | 4.4 | — | 4.7 | 4.0 |
Sold By | — | Amazon.com | SSL Unlimited | Amazon.com | Amazon.com |
model name | — | — | — | TI-30XIIS™, Black | FX-991CW |
power source | Battery Powered | Solar Powered | Battery Powered | Solar Powered | Solar Powered |
battery quantity | 2 c, 2 cr2, 2 lithium ion, 5 product specific | — | 1 lithium ion | 1 lithium metal, 1 cr123a, 1 cr5, 1 lr44, 1 c, 1 cr2, 1 a, 2 aaa, 1 lithium ion, 1 aa, 1 product specific, 1 unknown | 1 lr44 |
display type | LCD | LCD | — | LCD | LCD |
material | — | Plastic | Metal | Plastic, Metal | Plastic |
style | — | EL-W516TBSL | — | Single Pack | — |
Product information
Product Dimensions | 6.22 x 3.23 x 0.72 inches |
---|---|
Item Weight | 13.2 ounces |
ASIN | B000TDRHG8 |
Item model number | F2215AA#ABA |
Batteries | 2 C batteries required. (included) |
Customer Reviews |
4.7 out of 5 stars |
Best Sellers Rank | #211,667 in Office Products (See Top 100 in Office Products) #172 in Scientific Calculators |
Is Discontinued By Manufacturer | No |
Date First Available | July 22, 2007 |
Manufacturer | hp |
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Product Description
Product Description
HP 35s Scientific Calculator
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
Customer Reviews, including Product Star Ratings help customers to learn more about the product and decide whether it is the right product for them.
To calculate the overall star rating and percentage breakdown by star, we don’t use a simple average. Instead, our system considers things like how recent a review is and if the reviewer bought the item on Amazon. It also analyzed reviews to verify trustworthiness.
Learn more how customers reviews work on AmazonCustomers say
Customers like the quality, performance, and ease of use of the calculator. For example, they mention it's durable, has very helpful features, and is easy to use. Customers appreciate the value, and appearance of the product. That said, opinions are mixed on buttons, display, and keys.
AI-generated from the text of customer reviews
Customers like the quality of the calculator. They say it's a great general-purpose scientific calculator, durable, and accurate. It has a low power LCD and tactile feedback. Some say it has ed a high quality build and lasts far longer. Overall, customers are happy with the quality and functionality of the product.
"...Comes with an elegant, durable, double-zippered clamshell case (note: it's no longer included. It has been replaced with a vinyl slip case).*..." Read more
"...It sits nicely on the desk and the display is at the proper reading angle. It has solid rubber feet which stop it from sliding all over the surface...." Read more
"...and I would not hesitate to recommend it as the best general-purpose scientific calculator available today...." Read more
"...they are not only better to use and better featured, they are higher quality build and last far longer...." Read more
Customers like the ease of use of the calculator. They say it's ergonomic, intuitive, and easy to use. The design makes it very easy to manipulate complex numbers and vectors, and it' s also usable for simple tasks like every day math. Some like that it switches from RPN to Algebraic notation easily, and that it comes with a quick start guide.
"...; The keys are responsive, the form-factor is comfortable and convenient, and the appearance is gorgeous, far superior to the toy like calculators..." Read more
"...This design makes it very easy to manipulate complex numbers and vectors...." Read more
"...Compared to the competition they are not only better to use and better featured, they are higher quality build and last far longer...." Read more
"...alphanumeric prompts for user input is a little cumbersome and unintuitive (you have to use equation mode), but it can be done...." Read more
Customers like the performance of the calculator. They mention that it has some very helpful features, particularly the solver and the factorial function is available within programs. They find it easy to read and easy to find the functions. The alg mode works very well and has all the Log functions, trig functions, and inverse functions. It has a ton of very easy to use features, and can do RPN.
"...to my old HP22S in size and feel, while being far more powerful and having RPN...." Read more
"...I find the newer slip case to be sturdy and durable and works just fine and NOT to be a reason to avoid purchasing a 35s...." Read more
"...Overall I like this better than my 11C because it has some very helpful features, particularly the solver and unit converters, and I like it better..." Read more
"...The complex number support, a real core use case for engineers, works pretty well on 90% of the functions...." Read more
Customers like the value of the calculator. They mention that it's not a bad price for a great calculator.
"...first scientific calculator ... the HP 35s is a great buy and relatively inexpensive compared to Calculators of this caliber over the past 20 years...." Read more
"...True, it's more lightweight and built on a budget, but the cost ($<60) is a tiny fraction of what those calculators cost, and those were pre-..." Read more
"...Cheers to HP for bringing out a low-cost, powerful RPN calculator.Best," Read more
"...stumbled apon the 35S. It looked better than the 32SII and the price was right!..." Read more
Customers like the appearance of the calculator. They mention the overall design and look, the buttons and carry case, the old-looking design with a modern twist, and the face is made of metal and finished with a very light brushed look. The calculator comes with an elegant, durable, double-zippered clamshell case. The look and feel is very familiar, and customers appreciate the clear button labels. The physical aspects are well done, and they say the buttons click firmly. Overall, customers find the calculator to be a sweet collectible and useful.
"...For all these reasons it's a sweet collectible, in addition to being useful.The HP50g was released in 2006 and discontinued in 2015...." Read more
"...The Enter key is in the correct place (for me).* Comes with an elegant, durable, double-zippered clamshell case..." Read more
"...The leather cover looks really nice, but the slide on the TI is more convenient...." Read more
"...Good news: the physical aspects are well done: the buttons are good, the display is clear, it's light and fits well in the hand, and it comes with a..." Read more
Customers are mixed about the buttons of the calculator. Some mention that the buttons have a great tactile feel and are clearly marked, while others say that they are like mush and take more button presses to do things. The right cursor button and the multiplication key do not work, and the yellow shift button does not work right.
"...It just "satisfies." The keys are responsive, the form-factor is comfortable and convenient, and the appearance is gorgeous, far superior to..." Read more
"...HP's legendary tactile key feedback is also good and keystrokes are not likely to be ignored...." Read more
"...The TI has many more functions than the hp 35S, but it takes more button presses to do things...." Read more
"...$55 MSRP.The calculator is solidly built and has a nice tactile response and is loaded with features...." Read more
Customers are mixed about the display of the calculator. Some mention that the display is good, with the 2 line LCD display being an added bonus. However, others say that the product is made in China and the display could be better. Some customers also mention that it is annoying and the dot-matrixey display is not very useful.
"...This HP 35s is also an improvement, with a better display, faster processor, and far more memory than was available in the 10-series or 48-series..." Read more
"...The display is a little weird looking and takes some time to grow accustomed to. Overall readability is good...." Read more
"...It's a good size, has an easy to read screen and has great tactile buttons that produce a gentle click when pressed...." Read more
"...it just shows what fits, like "e-1", and there's a little extra annunciator in the display, telling you that you need to scroll to see the rest of..." Read more
Customers are mixed about the keys of the calculator. Some mention they love the feel, the size, and the keys. The keyboard layout is generally good, and no extra keystrokes are required. However, some say the layout is poorer than any other "real" HP, and that certain keys are not primary. The key feel is a bit shaky, and it's possible to press a key but miss the keystroke. Other customers have noted that the key sequences are cumbersome, and they've missed keying in a digit.
"...Reviewers have pointed out how other keystroke sequences are cumbersome but being a scientific and mathematical ignoramus, I have not noticed..." Read more
"...The Enter key is in the correct place (for me).* Comes with an elegant, durable, double-zippered clamshell case..." Read more
"...A 4- or 8-character limit would be fine.* No ability to type in symbols for data prompts...." Read more
"...time, the user will be happy with what's displayed, and no extra keystrokes are required...." Read more
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From what I can collect by reading the forums the most egregious bug is a failure to round properly in the 13th decimal place. So, for example, 0.0123456789012 + 0.000000000000051 = 0.0123456789013 as it should, but 0.0123456789012 + 0.000000000000050 = 0.0123456789012 which is technically wrong. This gets reported as "TAN doesn't work", which seems like an exaggeration, imho. Like I said, not a show-stopper for me. The other really big problem is that it's possible to put the calculator into an infinite loop that locks the device, requiring a hard reset and clearing all memory. If you've spent a lot of time entering custom programs by hand, with no way to transfer them to or from a computer, clearing all memory is a really big deal. But face it, you can download Free42, for, um, free, and run it on any old handheld device. It can import/export programs, and is a perfect clone of the renowned HP42S. If you can't afford to lose your programs then something like that is your better solution anyway, or an upgrade to the HP Prime with its computer interface.
Now for the good news! Playing with this I've been on a nostalgia high for the past 48 hours. Much more so than the HP50g, which never delivered quite the same kick - too advanced, or too big, or too something. The HP35s, on the other hand, is really similar to my old HP22S in size and feel, while being far more powerful and having RPN. It just "satisfies." The keys are responsive, the form-factor is comfortable and convenient, and the appearance is gorgeous, far superior to the toy like calculators HP made and still makes for the education market. For all these reasons it's a sweet collectible, in addition to being useful.
The HP50g was released in 2006 and discontinued in 2015. Considering that the HP35s was released in 2007 it feels like it's living on borrowed time. If, like me, you've always sort of wanted an HP35s you may want to pull the trigger now while it's still readily available.
One complaint: on page 42/43 of the "Quick Start Guide" that comes with the calculator, it says, "...in addition to this quick start guide, a printed copy of the users's guide can be obtained free of charge by calling HP Customer Care at 800-HP-INVENT." I've read online that people did succeed in doing that, but when I called HP this morning I was told that there are no more manuals available; they were all sent out and no more are being printed. So, if you want a printed manual, you'll have to print and bind yourself the 382 page PDF that comes on the enclosed CDROM, despite what the lying Quick Start Guide says. To be honest, I didn't really expect HP would honor that promise - it just would have been nice not to have to spend fifteen minutes on the phone to find out.
p.s. there's a movement afoot to reverse-engineer and re-release some of the classic HP calculators. Check out the , an HP-15C clone.
Overall build quality is good, in the context of the generally cheap manufacturing prevalent today. HP's legendary tactile key feedback is also good and keystrokes are not likely to be ignored. Battery life is excellent; expect to get about a year of average use from the two CR2032 cells.
If you require a graphing calculator I recommend the HP 50g .
* The keys themselves are not double-shot as in early HP Voyager series machines, but mine have yet to show any wear. As design compromises go I can live with that.
* The sides of the enclosure are raised so while resting the calculator face down on a flat surface will not depress any keys, the top surfaces of the keys are in the exact same plane as the case's lateral sides, so they can conceivably become scratched if you were to do that routinely. Why HP chose not to recess the keys about a thousandth of an inch to prevent that from happening is another in a long list of curious HP design questions that will plague mankind for eternity.
* The display itself is sufficiently recessed so that it is unlikely to be inadvertently scratched.
* Nice rubber feet on the back will prevent it from sliding around.
* Good, though somewhat limited complex number support. The manual contains an entire chapter on the subject).
* Programmability is good within its limitations, primarily a paucity of available registers for variable storage. You are limited to the 26 letters of the alphabet for named variables. Just like 640 K RAM "ought to be enough for anyone" 26 named variables is OK but more would be nice. Also, creating alphanumeric prompts for user input is a little cumbersome and unintuitive (you have to use equation mode), but it can be done. It's designed to be "keystroke-programmable" so entering programs is very easy. Users accustomed to simple programmability will be right as home but if you want a robust programming language like RPL you will need a 50g.
* Uncomplicated keyboard legend that uses one left Shift and one right Shift key. Nearly everything you need to do requires no more than two keystrokes. Setting flags or changing modes requires three or more.
* The Enter key is in the correct place (for me).
* Comes with an elegant, durable, double-zippered clamshell case (note: it's no longer included. It has been replaced with a vinyl slip case).
* A real, printed and bound paper manual that doesn't require an Internet connection or even batteries (note: a printed manual is no longer included. It has been replaced by a CD-ROM).
Cons: Not many to speak of. Keep in mind the preceding two formerly "pro" comments no longer apply to new units.
* RPN mode ought to be the default. Why else would anyone buy an HP calc?
* Questionable durability. I broke a key when I dropped mine about two feet onto a hardwood floor. No I shouldn't have dropped it but I've never broken an HP calculator through unintentional abuse.
* The display is a little weird looking and takes some time to grow accustomed to. Overall readability is good. It's entirely alphanumeric and I suppose there are some compromises that go along with that. Negative numbers are indicated by a tiny minus sign that appears to the upper left of the number. Why it can't be directly to the left is beyond me. Minor gripe. At least HP does not require a dedicated (-) key to change sign as there is on some TI calculators. If you want to change the sign of the existing x register's contents or change the sign as you're entering a value, change the sign with the change sign key. Simple.
Summary: For a scientific calculator, this is as good as it gets.