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rpnCalc 1.6.1

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(2) 4.5

RPN calculator widget. Free

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Rick Lansky

rpnCalc is a reverse polish notation (RPN) calculator. The stack behavior is based, rather loosely, on the HP-28S. I originally wrote it because the battery on my HP-28S died and I needed a calculator. Yes, I suppose I could have bought a new battery. But instead I wrote an HTML/Javascript/CSS RPN calculator; partly out of need, and partly as an exercise in Javascript.

What's New

Version 1.6.1:

Fixed a bug whereby if a HEX value contained a single 'E' and no other non-numeric characters, it was being converted to a exponential number.

Requirements
PPC / Intel, Mac OS X 10.4 or later

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rpnCalc User Discussion (Write a Review)

ver. 1.x:

(2)

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Anonymous reviewed on 02 Jul 2005

Nice.

But what does the "e" key do? I expected it to enter an exponent. But when I press it, it puts an "e" into the number, but the insertion point does not go into the exponential.

Of course, you can type "6.02e23" with the keyboard "e".

[Version 1.3]

2 Replies

Anonymous commented on 02 Jul 2005

Yeah, I noticed this a while ago and it's really annoying, but I can't figure out how to keep Safari from doing this. Basically, once you start using the buttons in the interface, it moves the cursor to the start of the number entry field (instead of the end). If you only use the buttons in the interface, this is not an issue. For example, you should be able to type 6.02e23 using the buttons in the interface without any issue. The problems arise when you try to go back and forth from the keyboard to the buttons in the interface.

If anyone knows of a fix for this (and I've already tried giving the entry element the focus in javascript), let me know and I'd be happy to fix it.

--Rick

+25

Krystof Vasa replied on 27 Mar 2006

e isn't for exponent. It is a constant used when solving exponential equations.