About calculators in general [LWN.net]

About calculators in general

Posted Oct 5, 2017 16:14 UTC (Thu) by smitty_one_each (subscriber, #28989)
In reply to: About calculators in general by bjlucier
Parent article: The NumWorks graphing calculator

Inviting the question: can this thing be configured for RPN? Otherwise, it's dead to me.

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About calculators in general

Posted Oct 6, 2017 7:06 UTC (Fri) by madhatter (subscriber, #4665) [Link] (2 responses)

Traction getting be to seem not does but, for asked been has It: https://github.com/numworks/epsilon/issues/35

Excuse me; I meant it has been asked for, but does not seem to be getting traction (sorry, that was childish of me).

About calculators in general

Posted Oct 6, 2017 9:46 UTC (Fri) by smitty_one_each (subscriber, #28989) [Link]

I saw what you did there immediately.

About calculators in general

Posted Oct 6, 2017 15:25 UTC (Fri) by nybble41 (subscriber, #55106) [Link]

Did you mean:

> it asked-for has-been it traction getting seems not but

Just reversing the order of the terms does not change an infix expression to RPN. However, if you diagram the sentence and then write out the resulting tree in postfix order you should get something approximating "RPN English". (Complicated, of course, by implied/missing clauses, conjugation, and tenses. No doubt a specialist in English grammar could produce a more precise translation.)

About calculators in general

Posted Oct 6, 2017 7:44 UTC (Fri) by jem (subscriber, #24231) [Link] (6 responses)

Even if the firmware could be updated to support RPN, the keyboard doesn't look very usable for RPN entry. The HP Prime might be a better choice if you want RPN, or the HP 35s.

About RPN...

Posted Oct 9, 2017 9:25 UTC (Mon) by Herve5 (guest, #115399) [Link] (5 responses)

Or, alas, just RPN Calculator on Android, which besides not having real keys is otherwise close to perfect.

If NumWorks did propose an RPN version (with associated keys) I would buy it immediately indeed...

Android RPN Calculator

Posted Oct 9, 2017 13:44 UTC (Mon) by rschroev (subscriber, #4164) [Link] (4 responses)

There are at least two apps in the Play Store by that name, and a boatload of apps with similar names. I'd like to see if I can get used to RPN; which app would you recommend?

Android RPN Calculator

Posted Oct 9, 2017 13:48 UTC (Mon) by corbet (editor, #1) [Link] (2 responses)

I have "RpnCalc" by Edward Falk. It's not like having my old HP 41C back, but it is a good emulation of the RPN calculator experience. I'd recommend it.

Android RPN Calculator

Posted Oct 9, 2017 14:08 UTC (Mon) by rschroev (subscriber, #4164) [Link]

Thanks, I'll give it a try

Android RPN Calculator

Posted Oct 10, 2017 8:59 UTC (Tue) by Herve5 (guest, #115399) [Link]

same for me...

Android RPN Calculator

Posted Oct 10, 2017 9:46 UTC (Tue) by jem (subscriber, #24231) [Link]

One alternative is Free42, which emulates an HP-42. Then there's an app version of the HP Prime, which was mentioned earlier.