- Free42 manual for free#
- Free42 manual how to#
- Free42 manual manual#
- Free42 manual license#
- Free42 manual simulator#
Example: 8 x ln in RPN is doing by 40 sin 5 + ln 8 x In RPN we can make any calculation we do in algebraic devices and this is not only more elegant but also more effective since there are less ambiguity's and we use less key strokes.
Free42 manual how to#
The main key to understand how to use RPN in more complex calculus is to realize that in RPN we make calculations from inside to outside instead of from left to right. RPN calculators are more standard and so less ambiguous. So algebraic calculators are ambiguous because the many ways they work. In the classic old models it is like RPN and we do 33 sin but in some modern models (which typically allow you to edit entered data using cursors) we do sin 33 = In a bad algebraic calculator which does not know this we have to do 2 x 79 = and 4+ = or 2 x 79 + 4 = What about calculate sin(33)? In a RPN calculator it is just do 33 sin or if you prefer 33 ENTER sin (in this case we don't need to press enter key) But in an algebraic calculator we have two ways. In a RPN calculator we do 2 ENTER 79 x 4 + But how one could do this in an algebraic calculator? If the calculator has the ( and ) sings it is just do 4 + ( 2 x 79 ) = But if there are no () we do this in a good calculator by doing 4 + 2 x 79 = By a good calculator we mean a calculator which knows that x and / are prior to + and. Lets now consider the following calculation 4+(2x79). To make this using a RPN calculator we do 2 ENTER 2 + As we can see in RPN mode we first enter the data pressing the ENTER key after every data (except for the last in HP's RPN) and then we enter the operations. Example: To make a simple operation like 2+2 in a normal algebraic calculator we do 2+2= which give to us 4. In RPN we first enter data and then we enter the mathematical operations. Perhaps someone listen to me! :)Ģ Basic Operations2.1 RPN HP-42S as most old HP calculators was a RPN calculator.
Free42 manual for free#
And also would be nice to have HP-42S roms 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. For more information about HP-42S please see Here you can find emulators for HP-42S (very nice) I would like to finish this introduction saying that would be nice to have 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 and equation editor, fractions, program lines starting with letters, physical constants, units conversion, less useless functions, etc. If you want to download the fantastic Thomas Okken Free42 program please go to this web site In my opinion Free42 is even better than the real HP-42S. 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.
Free42 manual manual#
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).
Free42 manual simulator#
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. e) Have the official manual but don't want to read more than 300 pages! Why HP-42S? Because it was a very, very nice calculator and also a powerful one. c) Have a palmtop with PalmOS and want a nice scientific calculator (get Free42) d) Just want to have an idea how 42S was. b) Got the Free42 simulator and want to know how to use.
This manual can interest people who: a) Have a HP-42S calculator and lost its manual. 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 U$300 on ebay).
Free42 manual license#
IndexIndex 1 Introduction 2 Basic Operations 3 Memory 4 Probability 5 Complex numbers 6 Programming 7 Using the Solver 8 Numeric Integration 9 Statistics 10 Matrices 11 Other Bases 12 Flags License for this manualġ IntroductionSince 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. An alternative HP-42S/Free42 Manual (Version 0.6) 2005Author: Jos Lauro Strapasson, Brazil.
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