![]() ![]() # It was the world’s first handheld scientific calculator with a LED display. ![]() # Forbes ASAP named HP 35 as one of the 20 “all time products” that have changed the world. # In the first three years after its introduction in 1972, sales of the HP-35 Scientific Calculator exceeded 300,000 units. # The now classic “Reverse Polish Notation” (RPN) first used in the HP-35 has become the most efficient way known to computer science for evaluating mathematical expressions. # At the time, contemporary calculators could only perform four basic functions – addition, subtraction, multiplication and division. # The HP-35, named for its 35 keys, was the first handheld calculator to perform transcendental functions such as trigonometric, logarithmic and exponential functions. Sadly, HP’s current computing technology is sub-par and won’t let us embed a video of Dean Takahashi and some guy named Wozniak talking about the HP-35 in reverent tones. The award commemorates important steps in computing technology. I should be set now until the end of my life at which point I shall consider owning this truly blessed machine one of the most cherished aspects of my life.The beloved HP-35, one of the first scientific calculators able to “perform transcendental functions such as trigonometric, logarithmic and exponential functions” with an LED display just received an IEEE Milestone Award. I have since bought numerous spares at apparently exorbitant prices, but the machine is worth it, and I do not have kids in daycare (so I can afford them :)). I was so saddened when HP discontinued the model (the end of a great era). I have used other machines, but this one is truly "the pinnacle of pocket calculator excellence" as another author once wrote. The complex number handling was a dream come true, and this hp great is very easy to program. It is equipped with anything a working electrical engineer (or any other engineer) needs. I bought my first as a senior in college after reading an add which stated that the hp 42S RPN scientific calculator was "engineered for the engineer." And I can say the it truly is. I continually marvel over this truly magnificient machine. This is the ULTIMATE ONE!!!!!Īn God said, "Let there be the hp 42S." ![]() The handling of complex numbers is top notch, and the unit is very easy to program with enough memory to tackle the toughest problems. This vintage (and still quite relevant unit) represents everything that made HP calculators the go to units for REAL Engineers and Scientists. No other manufacturer (TI, Casio, etc.) has produced anything close. This machine is a marvel and easily the best scientific calculator ever made. I would like to have a working unit all the days of my life. Verified purchase: Yes | Condition: Pre-ownedĪn God said, "Let there be the hp 42S." - CONTINUED.īought another one. Yet, they still won't do it! Read full review We've told HP what we want and that we're willing to pay for it. Judging by the high prices HP calculators prior to 2001 fetch on eBay, I'd say many others feel the same about HP now. HP no longer deserves to be associated with quality. I don't expect HP to ever make a quality calculator again. I've asked HP's new President & CEO Dion Weisler to do just that, but I'm not holding my breath. Personally, I'd like to see an HP 15cii and an HP 42sii. ![]() In my opinion, the best scientific programmable calculators that HP ever made are the HP 67, HP 15c, HP 32sii and the HP 42s (although I'm very fond of the HP 29c and HP 34c) The best of the bunch I'd have to say is the HP 42s. HP must have read them too and obviously doesn't care any more. If you'll read the reviews on eBay, Amazon and HP's own public reviews you' ll notice that Kinpo's calculators aren't as good as the one's HP used to make. Kinpo made the HP 33s and the current HP 35s calculators. Since then, Kinpo Electronics of China has been making scientific programmable calculators and HP has been putting their name on it. Many scientists and engineers use this calculator today, 25 years after its introduction."Īround the turn of the century, HP terminated its' calculator development team and decided to reduce the quality of its' calculators. "This calculator is often regarded as the best ever made in terms of quality, key stroke feel, ease of programming, and daily usability for engineers. The second to last Scientific Programmable RPN calculator HP made. ![]()
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