| Brand: | Hewlett Packard |
| Model Number: | HP35S |
| Colour: | Black |
| Material Type: | plastic |
| Manufacturer Part Number: | HP35S |
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Product Specifications
Technical Details
- Programmable scientific calculator with twin line display
- Efficient RPN and Algebraic data entry
- 31KB memory with 800+ independant storage registers
- HP Equaton solver and 42 built-in Physical constants
- Ideal for students and professional within engineering, surveting, science and maths
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Product Description
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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.
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Customer Reviews
Most Helpful Customer Reviews
9 of 9 people found the following review helpful
Some story in advance.
I am using these calculators since early `70ies. I`ve used in the past hp35, hp45 (since I was a student at the university) and I own an HP calculator since 1977 (HP27). I used to program in its language too (One of those was an HP41 with card reader - memory modules, printer etc.). So at the end I was addicted in RPN notation. These devices were those that someone could characterize as long lasting and with excellent feeling in keyboard. An art of technology.
The last of these died at mid `90ies (HP41), after almost 15 years of use, and I had to replace it. At that time (till nowadays) I need a reliable RPN device to do a lot of calculations. So I bought an HP32s. I used 2 of them, it was a great device but both died from hardware problem (stop responding) at about 3-4 years of use. Then I bought HP33 (because 32s was out of production) and disappointed. It has a really awful keyboard, in arrangement (they changed the place of enter!!), in feeling, and quality because very soon started to foul me. I had two of them, each one lasted less than a year. So HP33 is not an option.
Then HP35s appeared. The first one I bought was at April 2008 and just before some time Enter key started to foul (not responding every time though was clicking). So it is not a long lasting device but still 2.5 years is far more better that before.
I found also one more in negatives when entering exponent. In previous models if you would like to enter a power of 10 directly by pressing E and then the exponent. Now you have to press always 1 before E or else the device is confused. So for old users is something to change in their habits.
Positive is everything else. It is a real recreation of old devices and it would get more that 5 stars if keyboard was better in wearing by extensive use.
Conclusion
If you do a lot of calculations each day you`ll probably have to replaced it in 2-3 years else it is the device for every RPN addicted (you can use it in ALG notation -as every other calculator in this world - but I never try it).
I am using these calculators since early `70ies. I`ve used in the past hp35, hp45 (since I was a student at the university) and I own an HP calculator since 1977 (HP27). I used to program in its language too (One of those was an HP41 with card reader - memory modules, printer etc.). So at the end I was addicted in RPN notation. These devices were those that someone could characterize as long lasting and with excellent feeling in keyboard. An art of technology.
The last of these died at mid `90ies (HP41), after almost 15 years of use, and I had to replace it. At that time (till nowadays) I need a reliable RPN device to do a lot of calculations. So I bought an HP32s. I used 2 of them, it was a great device but both died from hardware problem (stop responding) at about 3-4 years of use. Then I bought HP33 (because 32s was out of production) and disappointed. It has a really awful keyboard, in arrangement (they changed the place of enter!!), in feeling, and quality because very soon started to foul me. I had two of them, each one lasted less than a year. So HP33 is not an option.
Then HP35s appeared. The first one I bought was at April 2008 and just before some time Enter key started to foul (not responding every time though was clicking). So it is not a long lasting device but still 2.5 years is far more better that before.
I found also one more in negatives when entering exponent. In previous models if you would like to enter a power of 10 directly by pressing E and then the exponent. Now you have to press always 1 before E or else the device is confused. So for old users is something to change in their habits.
Positive is everything else. It is a real recreation of old devices and it would get more that 5 stars if keyboard was better in wearing by extensive use.
Conclusion
If you do a lot of calculations each day you`ll probably have to replaced it in 2-3 years else it is the device for every RPN addicted (you can use it in ALG notation -as every other calculator in this world - but I never try it).
1 of 1 people found the following review helpful
The calculator has a retro feel, nice positive keys, and it has RPN entry. It is versatile enough for limited standard stats, more complex maths and business use in my experience, making it good for even advanced office use. The layout is VERY intuitive (nice big enter key!) and I really like the fact that there are so many functions labelled on the keys, which means that you are not constantly going back to a manual It's a lot less bulky than a graphing calculator but a little too big for a pocket - OK for suits but not for jeans, so not as practical as the old 15C.
For all the reasons above it is much nicer to use than a graphing calculator and when I first bought it I quickly found that I prefered it to anything else for medium sized calculations. The retro wedge shape, fast processor, key size and layout make it in practice the fastest calculator to use that I have ever had. I am much faster calculating on this than any oher device. This is realy good because you start playing with the maths intuitively as you go along - very powerful for problem solving.
BUT battery life has been a problem for me. It uses two CR 2032s and I get through these faster than paper clips. Generally they are not cheap either, although bulk buying on Amazon has helped a little. For this reason I have generally gone back to using an HP 50G (which takes AAAs) for most of the time and carry an old 12C in my pocket.
I would have liked to have recommended this unreservedly, but I don't feel I can because of the battery life. In practice you would probably be better spending the extra money on a good graphing calculator.
For all the reasons above it is much nicer to use than a graphing calculator and when I first bought it I quickly found that I prefered it to anything else for medium sized calculations. The retro wedge shape, fast processor, key size and layout make it in practice the fastest calculator to use that I have ever had. I am much faster calculating on this than any oher device. This is realy good because you start playing with the maths intuitively as you go along - very powerful for problem solving.
BUT battery life has been a problem for me. It uses two CR 2032s and I get through these faster than paper clips. Generally they are not cheap either, although bulk buying on Amazon has helped a little. For this reason I have generally gone back to using an HP 50G (which takes AAAs) for most of the time and carry an old 12C in my pocket.
I would have liked to have recommended this unreservedly, but I don't feel I can because of the battery life. In practice you would probably be better spending the extra money on a good graphing calculator.
1 of 1 people found the following review helpful
The calculator is great. It has RPN. Once you have got used to RPN you will never want anything else. For routine calculations it's great. For Hex calculation and conversion it is cumbersome and if this is an important feature for you, get something else.
But the keys don't work properly. With the first one I received, the square root key needed heavy pressure to make it work. So I sent it back but the replacement was worse. It has 3 (out of 43) keys that require a firm press (but not as firm as the square root key on first). I have decided to live with it as the keys that require a heavy pressure aren't ones I use much. This needs to be fixed. Hewlett-Packard: are you listening?
If it weren't for the key problem this would have 5 stars.
But the keys don't work properly. With the first one I received, the square root key needed heavy pressure to make it work. So I sent it back but the replacement was worse. It has 3 (out of 43) keys that require a firm press (but not as firm as the square root key on first). I have decided to live with it as the keys that require a heavy pressure aren't ones I use much. This needs to be fixed. Hewlett-Packard: are you listening?
If it weren't for the key problem this would have 5 stars.
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