Keys that are “2 nd functions” denoted by orange lettering on the calculator are denoted in orange with an orange box preceding it, e.g. ENTER, except when the keys are numbers or arithmetic operators. Perhaps someone will listen to me! Ī quick note on notation: throughout this manual, for the most part, keys that are to be pressed are denoted by putting them in a box, e.g. ![]() And it also would be nice to have HP-42S ROM images for free just like what happened to HP-48G and other models and keeping PDF versions of the manuals of retired models to download would be nice too. I would like to finish this introduction saying that it would be nice to have the HP-42S back to life again and even better to have a model (both real and in simulator/emulator form) based on HP-42S but with some of the 33S features like more memory, an equation editor, fractions, program lines starting with letters, physical constants, units conversion, less useless functions, etc. Try asin(acos(atan(tan(cos(sin(6°))))))įor more information about HP-42S please see In my opinion Free42 is even better than the real HP-42S. If you want to download the fantastic Thomas Okken Free42 program please go to this web site This because I suppose most owners don't have the printer (and it is not so useful) and also haven't had a HP-41 prior to HP-42S. Two things I really don't want to see here are PRINTING and HP-41 compatibility. It is important to say that this manual is not complete and I don't want it to be. This calculator played an unique position among HP calculators! Being a scientific programmable 100% RPN calculator, it also had some graphing abilities but was pocketed sized and non RPL (some people as me like RPN, but dislike RPL). And because there is a free simulator (Free42) that works on Palm OS, Windows and Linux and there are also some emulators (at the moment emulators are only useful for who has a real calculator since HP-42S roms are not freely available). I know some other HP models from the past and the present like 48G, 49G, 28S, 33S, 20S, 6S Solar, 15C, and even a TI-36X Solar, etc, but 42S is my favorite. Why HP-42S? Because it was a very, very nice calculator and also a powerful one. Have the official manual but don't want to read more than 300 pages! Have a palmtop with PalmOS and want a nice scientific calculator (get Free42) Got the Free42 simulator and want to know how to use it. Have a HP-42S calculator and lost its manual. This manual will be of interest to people who: ![]() I have a HP-33S and had a HP-48G, but my brother has one and I also use Free42 simulator for PalmOS. I personally don't have a HP-42S (more than US$300 on ebay). Since HP-42S was a very nice calculator, and its official manual is no longer freely available and there were many people looking for its manual, seemed good to me to write my own HP-42S manual. 18ĥ.2 Complex numbers in polar coordinates 18Ħ.2 More than one program in the memory 20ĩ.2 The second line: ALLΣ, LINΣ, ΣREG and ΣRG? Functions 28ġ3.1 Keyboard Interface (Windows, Linux and Mac Desktops and Laptops) 33ġ6.1 (nonprinting text below ! click VIEW / hidden paragraphs to view it in Open Office) 44 2.9 Getting used to some keys of the keyboard 11ĥ.1 Complex numbers in rectangular coordinates.
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