Calculator.NET for Windows

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Developer’s Description

Get a calulator that use Reverse Polish Notation.

Calculator.NET is an enhanced version of the standard calculator in Microsoft Windows. It uses RPN (Reverse Polish Notation), which is used by many pocket calculators, e.g. from Hewlett-Packard. If you have used a HP 11/28/32/41/42/48, or any other RPN calculator, you will feel right at home.

Some of the enhancements included: RPN, extended function set, and customizable user interface.

Calculator.NET for Windows

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Full Specifications

GENERAL

Release: November 18, 2014

Latest update: November 18, 2014

Version: 2.3.3

OPERATING SYSTEMS

Platform: Windows

Operating System

Windows 2000
Windows ME
Windows NT
Windows XP
Windows 98
Windows 10

Additional Requirements: .NET framework 2.0

POPULARITY

Total Downloads: 33,352

Downloads Last Week: 4

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Last Updated

User Reviews

3.9/5

19 User Votes

It almost has the feel of an HP calculator.
Blue DayeNovember 29, 2015
Pros
The command line is nice. The infinite(?) stack is great for complex calculations.
Cons
The stack is not correctly represented in relation to the command line. It should be an inverted stack (as all the HP RPN calculators are.)
Summary
I would rate the application 3.5 out of 5. My first test of any RPN calculator is: error correction -- LastX (HP41) or LASTARG (HP48). The 'Undo' command works well, but it is an unconventional name. I must stress again that if the application is meant to resemble an HP calculator the stack has to be inverted; if not, the command line should be moved to the top of the display.
Very nice RPN Calculator
CrimsonJDApril 15, 2013
Pros
This is a quite usable RPN calculator with a large (infinite?) stack, and good usability. I wanted to write a review to respond to some of the previous reviews: - StepNJump - this is an RPN calculator, so its working exactly as it is supposed to - the built-in help file does a pretty good job explaining how to use RPN, and you can find more online - bethgene03 - I certainly can't find any trojan, if anyone else can, post how you found it - For the guy who got 6+4=12 - This was a tricky one. I realized that you have the calculator in Base 8 instead of Base 10! Click on "DEC" instead of "OCT" and 6+4 will hopefully be 10! - For the Excalibur recommendation - This was hard for me to find. The only shareware site I could find it had a _terrible_ installer that installed some weird spyware toolbars even though I told it not to. Makes CNET's installer seem downright pleasant. The calculator itself is OK but has a fixed stack of 4, which makes it less useful.
Cons
Hopefully the author will update this one day. It runs fine under Win7-64 bit, but I couldn't get the help file to open by clicking Help. (I could open the help file directly from the install folder though) A few more keyboard shortcuts would be a big help. There should be a Clear All shortcut (maybe ESC), and the SPACE bar should do an Enter. Customizable shortcuts would be really great.
Summary
Exactly what I was wanted - simple RPN w/ deep stack.
BtwardNovember 6, 2009
Pros
Compared to others on CNET, this one actually has the functionality I am accustomed to on the HP28.
Cons
Haven't found any yet.
Summary
I would recommend this to someone looking for a small, free, application that allows you to do basic RPN calculations. Sometimes genius is in simplicity.
Doesn't work for me
---StepNjump---April 8, 2009
Pros
Doesn't work!
Cons
When I key in any kind of operation: +, -, /, *... I get the error message: invalid operation. Strangely enough, I have the latest Microsoft.net framework 3.5 SP1 installed under XP SP2
Summary
<br /><br /><span class='notifyMsg'> Updated </span>on Apr 8, 2009<p/>Ok, I found the problem. It's weird they have it to work that way but here's what you need to do: The first value you enter, you got to press <ENTER> first. Then you can start using the calculator in RPN mode. My rating is 3 because it doesn't have (or couldn't figure out) a tape so one can scroll back to review the calculation history. That would be a great improvement.
trojan in this program
bethgene03April 4, 2009
Pros
I liked the size
Cons
Trend Micro immediately detected a trojan in this program
Summary
perfect - my HP 42s is getting old - this works much the same - easy transition
richwest3February 6, 2008
Pros
Quick, easy, useful tool. Installed perfectly. Intuitive interface if you've used an HP RPN calculator.
Cons
Summary
RPN - simple visual
randysvhJuly 5, 2007
Pros
very functional, if you like RPN format it is great. Although i have to say i like the styled functional look of a HP design, as seen in another RPN calculator.
Cons
The visual interface is not pretty.
Summary
Does what it should do!
mtkavcJanuary 11, 2006
Pros
The command line is separate from the stack, which is excellent. The window is resizable.
Cons
There is no Drop button keyboard shortcut, no thousands separator, does not use system comma, strangely the stack is loaded from the top.
Summary
Nice. Just what I wanted.
BifocalApril 15, 2005
Pros
This calculator is large, resizable, and the colors can be adjusted. I wanted one because the Windows calculator was too small and awkward for me. I haven't used RPN since 1982 and will not be doing advanced calculations on it. (So I can't speak to the some of the issues addressed in other reviews.) <p>I wanted a big, free calculator that could work in Hex and Binary and that is what I got.
Cons
It does take a few moments to load on my 900 mz machine. This really doesn't bother me. I’d like it if the 10 key portion was a little larger then the rest of the keys just to make it a bit easier to focus on the pad. I’d also like to be able to change the font size on the buttons. None of these things are much a problem.
Summary
Skip it...Try Excalibur instead
December 28, 2004
Pros
Cons
Summary
Too flaky and too many errors. I would recommend Excalibur instead (an oldie but goodie in my mind).