One-number calculations (such as 1/ x, √ x, x 2, cos x, log x): first key-in the number, then press the function key (or press the applicable prefix (‘shift’) key, then the function key).Įxample: calculate √2 Press: 2 √ x Result: 1.41421356237Įxample: calculate 34 2 Press: 34 x 2 Result: 1156.If your results are not as expected see appendix H. of the Cheat Sheet) the keystrokes are quite similar to those used in this tutorial (use * to multiply, / to divide, v for the square root function √ x and ^ for the power function y x ). Note that using dc you’ll have to press p⏎ to see the result of a calculation, but apart from that for basic arithmetic (1. In Linux and macOS dc is installed already Windows users can try out an online dc If you’re a fan of the command-line, you could also use the ‘desk calculator’ utility dc, one of the oldest UNIX programs, even predating C. the HP Prime emulator for Windows or macOS the HP 35s emulator for Windows or Wine the WP 34S emulator for Windows, macOS, Linux or iOS or Free42, an HP-42S simulator, available for Android, iOS, Windows, macOS and Linux Free42 also features a simulator of the HP-82240 printer. You can also download one of the numerous RPN calculator programs for your computer or smartphone. With this simulator you can watch the stack live! Open in a separate window on macOS by simultaneously pressing ⌥⌘ (option+command) while clicking the link or on Windows, macOS or Linux right-click the link and choose ‘Open in a separate window’. If you don’t have a hardware RPN calculator use your computer keyboard and practice on the famous HP‑15C with the online version of Greg Hewgill’s HP‑15C simulator. With these simulators you can only use a pointing device (e.g. To get a feeling for the HP‑35 you could use Neil Fraser’s JavaScript HP‑35 simulator or my modification of it, the HP‑35 SOS, which has ‘Stack Overflow Sensing’. The Appendices elaborate on a few interesting points. is a bit more difficult and probably is unnecessary, but if you are a real ‘formula cruncher’ study of that point will be well paid off. & 7.) take another 30 minutes to get used to. of the Cheat Sheet) in less than 15 minutes. You can learn the basics of RPN (1., 2., 3. The ‘Cheat Sheet’ below serves as a table of contents and as a summary for this tutorial. As far as possible it uses the colours of the keys as they appear in that Manual, so the colours of your calculator’s keys will almost always differ don’t get confused by that. This tutorial is a tribute to the HP‑35 and especially to the lay-out of the beautiful and informative HP‑35 Operating Manual. HP‑12C Platinum, HP 17bII+ and HP 35s, in all calculators sold byĪlso in the amazing WP 34S and WP 31S, and in a slightly modified version in the HP 20b and 30b and in graphing calculators like the HP 50g and HP Prime. This same RPN is used in calculators sold by HP nowadays, like the HP‑12C, In 1972, almost 50 years ago, HP launched the HP‑35, the first pocket calculator with transcendental functions and the first with RPN. What’s better, it gives you more insight into yourĬalculations than using the ‘algebraic’ systems used by other calculators and it keeps you and not your calculator (see Appendix D) in command of what is calculated. RPN, postfix notation or stack logic, the calculator logic system used in many Hewlett-Packard (HP) calculators and simulations thereof, like the standard Calculator of macOS in RPN-mode (start with ⌘R or Command+R), is easy to use and saves you time because there is no need to use brackets or =. some things HP did not tell Copyright © 2014 by Hans Klaver, The Netherlands
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