HP Forum Archive 20

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Simple RPN Message #1 Posted by JDonley on 27 Oct 2011, 10:14 p.m. I downloaded [from the App store] a very nice basic RPN calculator app for new IPad 11. It is called "Simple RPN". 99 cents and worth it. Hard to believe IPad 11 comes with no basic calculator. Don't know if this an appropriate topic for this site but am sure there are alot of folks on this site with IPads.

Re: Simple RPN Message #2 Posted by bill platt on 27 Oct 2011, 10:23 p.m., in response to message #1 by JDonley Apple: spend more for the device so that you can spend even more for the basic stuff :-) Microsoft: spend less, and get what you pay for :-(

Re: Simple RPN Message #3 Posted by Ethan Conner on 27 Oct 2011, 10:35 p.m., in response to message #2 by bill platt They both "back end" you just for different things. One for increased functionality and one for protection. :)

Re: Simple RPN Message #4 Posted by Eric Smith on 28 Oct 2011, 1:27 a.m., in response to message #1 by JDonley There's an iPad 11?

Re: Simple RPN Message #5 Posted by Marcus von Cube, Germany on 28 Oct 2011, 3:51 a.m., in response to message #4 by Eric Smith It depends on the font used. :-)

Re: Simple RPN Message #6 Posted by Andrés C. Rodríguez (Argentina) on 28 Oct 2011, 5:20 p.m., in response to message #4 by Eric Smith Current iPad is 10, next year model will be 11 :-)

Re: Simple RPN Message #7 Posted by Jean-Michel on 28 Oct 2011, 1:17 p.m., in response to message #1 by JDonley Hello Do the shifted functions appear on the keys only once one has pushed the blue "f" key? I guess this is the role of this key! By the way, which shifted functions does it offer? Many thanks advanced for your answer. Kind regards.

Re: Simple RPN Message #8 Posted by JDonley on 28 Oct 2011, 4:30 p.m., in response to message #7 by Jean-Michel Yes, the functions do appear on the keys. This is a very simple calc with the blue shift key shifting between "RCL"/ "STO". "CLa" shifts to "CLx". A third key "X-Y" [exchange] shifts to a function key that enables a change in the background color/style. Something I won't use. This isn't meant to compete with the various HP calc emulators [HP41 is available]. For .99 it is totally adequate for someone who prefers RPN and doesn't need something that will handle a space launch.

Re: Simple RPN Message #9 Posted by Jean-Michel on 28 Oct 2011, 4:39 p.m., in response to message #8 by JDonley Thanks for your fast and accurate explanations. You may also like two other apps: AccessRPN and Pcalc lite. More to say, they are free! Give them a try... Access RPN has a funny feature that enables you to see the stack operating.

Re: Simple RPN Message #10 Posted by JDonley on 28 Oct 2011, 5:53 p.m., in response to message #9 by Jean-Michel thanks, I just downloaded both. Am ready for that space launch now!

Re: Simple RPN Message #11 Posted by Michael Kussmaul on 28 Oct 2011, 4:41 p.m., in response to message #1 by JDonley I use PCalc on my iPhone and iPad. It has a normal RPN mode and a HP 48 style RPN (RPL) mode. Works great and has a very nice UI. The only thing missing is some kind of solver or programmability, but it has all trigonometry and even base conversion and calculation functionality.

Re: Simple RPN Message #12 Posted by Andrés C. Rodríguez (Argentina) on 28 Oct 2011, 6:42 p.m., in response to message #1 by JDonley You may like Free42 or a derivative from it, named 42S. They are great on the iPod Touch, I don't know if there are differences on the iPad due to screen size, etc.

Re: Simple RPN Message #13 Posted by Eddie W. Shore on 31 Oct 2011, 3:24 p.m., in response to message #1 by JDonley Anyone try ActiveRPN for the iPhone/iPad? The basic version is free. The scientific version with macros is $.99. Each macro can hold up to 80 steps.

Re: Simple RPN Message #14 Posted by JDonley on 31 Oct 2011, 10:27 p.m., in response to message #13 by Eddie W. Shore there are a couple of utube videos that illustrate active RPN....interesting program.

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