HP 35s Scientific Calculator Review: Specs, Pros and Cons

Introduced as a revamp of a classic machine, the updated HP 35s scientific calculator provides a familiar feeling to loyal HP users. Instead of being targeted at students, this calculator has been crafted with the working professional in mind. Check out our review of the HP 35s scientific calculator to find out the specs, pros, cons, and more.

General Info about the HP 35s Scientific Calculator

The reiteration of the classic HP 35s scientific calculator has been a big hit. Most users tend to be major fans of the Reverse Polish Notation (RPN) mode, which this calculator excels in. If RPN isn’t your preferred mode, the HP 35s scientific calculator also offers an algebraic entry-system logic mode — a major plus, since scientific calculators rarely, if ever, offer both modes.

Those who will find this calculator most useful are those working in the field, such as surveyors, engineers, medical professionals, and scientists. Despite the higher cost of this unit, it is truly worth every cent.

HP 35s Scientific Calculator Product Specifications

Offers both RPN and algebraic entry-system logic modes.
Keystroke programming.
Features the time-saving HP Solve application.
Single and two-variable statistics.
Linear regression capability.
Over 100 built-in functions.
Performs inverse functions, cube root, logarithms, exponents, factorials, and more.
Fraction mode with fraction-to-decimal conversion.
800 memory registers with storage of 30KB.
Automatic shutdown after 10 minutes of non-use.
Power off memory protection.
Two-line, 14-digit LCD display with adjustable contrast.
Dimensions of 3.23 by 0.72 by 6.22 inches.
Weighs 4.4 ounces.
Powered by two CR2032 batteries.
Approved for use on the SAT, ACT, PSAT/NMSQT, AP, PLAN, and EXPLORE exams.
Protective case included.

PROS and CONS of the HP 35s Scientific Calculator

PROS

Stores many equations in memory.
Keys have a tactile feel with a nice click to them.
Choice between RPN and algebraic entry-system logic modes.
Quick Start Guide comes included, along with a CD.
Slim and lightweight build but durable.
Excellent fractional display capability to toggle between fractional and decimal display.
Superior programmability.
Intuitive keyboard layout.
Built-in equation solver (HP Solve) makes calculating quick and easy.
Case provides a good amount of protection.
Nice sized keys allow for less typos.

CONS

Doesn’t run on solar power; batteries only.
Steep learning curve to get a handle on the system.
Screen can be a bit hard to read at certain angles.
Not too cost-effective.
Awkward complex number entry.
No computer connectivity for backing up programs.
Keys sometimes lag or skip entries.
Hex mode could use improvement.
Does not feature a textbook-like output.

Common Issues in HP 35s Scientific Calculator User Reviews

Does not offer an eye-angled display.
Keys have a tendency to skip entries during fast keying.

The issues listed above have been pointed out by a handful of users in reviews of the HP 35s scientific calculator. The most serious issue is the lack of an eye-angled display — this makes it hard to scan the display. Further, the keys sometime skip entries if entered too quickly.

If you aren’t looking to beat the clock, however, this shouldn’t affect the performance too much. That being said, users of the HP 35s scientific calculator appreciate the classic look and feel that this unit provides. Favorite highlights include the HP Solve feature, overall functionality, keyboard layout, and most pleasing, the integration of RPN.

Verdict

Overall, the main draw of the HP 35s scientific calculator is its RPN mode. Long-time users of RPN continue to be in awe of this unit and highly recommend it. If you want a calculator that performs in algebraic mode as well, the HP 35s scientific calculator still has you covered. Definitely consider this unit if you’re in the market for a new one.