HP 35s Scientific Calculator

My first handheld electronic calculators were TI scientific calculators, but I really wanted HP, mostly because of RPN and overall quality. I finally got my first HP in 1978, an HP-67 programmable calculator (which I still have, but unfortunately, it no longer works). In 1987 (?) I got an HP-15C, which I still have...and still use. It's a wonderful calculator, and is no longer being manufactured by HP. I was looking for another (second) RPN calculator, and happened onto this item on Amazon. After a quick perusal of the reviews, and a bit more research, I ordered one. It's very nice. If you're used to the HP-15, HP-67, HP-41, there is almost no learning curve with the primary functions of this calculator. If you need the financial wizardry of the HP-12C, stop here, and go order one of those. Otherwise, for scientific and math purposes, this calculator does very well. Unlike the other HP calculators I mentioned, this one additionally handles fractions as fractions (if desired), has a better way of displaying imaginary/complex numbers, has metric<->US unit conversion (which admittedly is mostly useful here in the USA, or in other countries when attempting to understand our silly measuring system), and has a lot more storage. It feels a bit cheaper than older HP models, but its keys feel better (to me, anyway) than the flat screen on a smartphone's calculator app. The unit also weighs a lot less than a smartphone with a battery pack attached. It comes with a nice sleeve-style case, similar to the HP-15C. This device does work in Algebraic mode, so if you need to loan it to someone who doesn't understand RPN (or if you don't understand RPN), it's still good for that. However, there are probably better choices for non-RPN calculators if you have no use for RPN. For numerical base conversion (binary, octal, decimal, hexadecimal only), it's not overly difficult to use, but does require reading about how to do it. There are a few extra keystrokes required that are far from obvious.In short, it's a very good RPN calculator, that will be easy to use for HP fans, others not so much. It's inexpensive for what it is. For basic scientific calculations, it's trivially easy to use for those proficient with RPN, but other functions (base conversion, equation solving, programming, fractions), you'll need to refer either to the (very good) online manual or other online reference.

I have RPN calculator emulators on my iPhone, but there are work places we cannot take our phones, and those are not the same feel. Lacking blue tooth, or any other electrical connectivity is a security advantage that keeps out other science calculators — and enables it to be one of three calculators (and the only programmable one) authorized on National professional exams.The efficient RPN is addictive and the four-stack effective.Our only hope is HP will bring the 35s back or is preparing a new iteration with a faster processor, better screen, and the few other features the other two professional exam calculator advantage options have been cited as having.An inexpensive HP300s+ version with an RPN option — like the 35s has an Algebraic option, and a proper RPN machine’s traditional big Enter key and similar stack would allow teaching young students how to enjoy the speed of RPN, thus broadening their view of the world and grow the market.PLEASE HP, bring back the RPN 35s. You hooked us on addictive RPN and now you abandon us!

I like that both the contents of the X and Y registers are displayed. I like that it has a large table of scientific constants, although it is missing k = 8.99 × 10 9 N ⋅ m 2 /C 2. I like that conversions between polar and rectangular coordinates are as easy as choosing a different display option, and that the adding, subtracting, multiplying, dividing, and reciprocals of complex numbers are as easy as just pushing one of those buttons. (Example, 2+3i is a complex number, where 2 is a real number (Re) and 3i is an imaginary number). I like that it has 26 memory locations, (A-Z), to store numbers that are being worked with now or later. I like that often used equations can be programed in and executed at the push of a button.

HP has good quality calculators both scientific and financial. This calculator does what is supposed to do nonetheless it is not a graphics calculator. If you are a RPN guy, and do not need the graphics capability, this is the calculator you are going to enjoy using despite only displays two lines at a time. I am used to RPN (30 plus years) and also have a graphics calculator from another brand and unfortunately I make mistakes when I use it. I had a nice HP graphics calculator which I neglected to check the batteries and got damaged because of that; too pricey to replace now and the alternative was to get a competitors model but really very hard to adapt.

If you don't know how to program a calculator for repetive calculations, begin on this machine. If you don't know RPN calculator operations which are far faster and less error prone than "=", buy this and learn. You will be thrilled. The LCD display reads nicely in direct sunlight as well as at a dim desk, any angle. The calculator will not run a remote printer so far as I know. It is very fast for chained entry. Just keep an eye on what you are doing.Key printing should be OK for a few years if your hands are clean. These don't look like molded-in or laser-etched markings so beware lifetime if your hands are abrasive. Passes anti-functions tests. Very nifty units conversion on keyboard. Excellent solver function entry. The keyboard is much better than using a cellphone and app. The programmability is the icing on the cake.

Nada a acrescentar

Muy buena calculadora para estudiantes universitarios, es de uso general, ya que puede servir para áreas de ingeniería, finanzas, contabilidad. Puedes crear programas para resolver problemas concretos.

Das Gerät ähnelt in der Form sehr stark dem HP35 aus dem Jahr 1975. Gerät besitzt zudem die für frühere HP-Taschenrechner typischen, frontseitig abgeschrägten Tasten. WICHTIG (zumindest für mich :) Der Rechner kann sowohl in klassischer umgekehrter polnischer Notation als auch in algebraischer Notation bedient werden. Nachteil: Die deutsche Bedienungsanleitung gibt es leider nur in der Downloadversion.

Missed my old HP 41C RPN calculator. This more modern version has the same quality feel.

Sono un felice possessore di un modello precedente per l'esattezza l'HP32S II e con la paura di non trovare più calcolatrici del genere e che il mio vecchio tank mi lasci a piedi dopo più di 30 anni di onorato servizio mi sono deciso a comprare la 35S. Per chi come me è abituato alla Notazione Polacca Inversa ( oggi si direbbe vecchia scuola) , è una delle ultime calcolatrici che ancora usa questo sistema notevolmente più veloce del sistema Algebrico che comunque si può impostare dal tasto MODE. Di ottima fattura ( ma questo è scontato ) solida e affidabile come solo mamma HP sa fare. Anche se oggi non si usa più, consiglio vivamente anche ai giovani di usare calcolatrici RPN, all'inizio può sembrare difficile ma ci si abitua presto e poi si apre un mondo nuovo. La calcolatrice è arrivata con il manuale in Italiano su cd e una custodia che per il prezzo della calcolatrice potevano sprecare 2 lire in più , la mia vecchia 32s ha la custodia in pelle, la 35una custodia in similpelle vinilica , ecco forse questo è l'unico neo.P.S. la mia HP32S funziona ancora dopo esattamente 31 anni .