Adds an RPN calculator as a browser action button.

Latest Version

Version
1.0
Update
October 4, 2017
Size
12.28KiB
Developer
Category
Users
638
Rating
5 ★
Manifest Version
2
Web Store Status
Languages Support
English (United States)
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Permissions
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RPN Calculator Extension

This extension adds a convenient reverse Polish notation (RPN) calculator as a browser action button. Also called postfix, RPN calculators take their operators after the operands.

For example, to get the sum of two and three on a normal calculator, you would hit \"2 + 3 =\". On an RPN calculator, you would hit \"2 Enter 3 +\". In general, RPN calculators require fewer keystrokes over a series of extended operations.

It may seem strange at first, but once you get used to it, you'll never go back. HP made a series of extremely popular RPN calculators back in the 1970's and 1980's

Known Issues:
1) Calculator doesn't automatically get focus when displayed.
2) Keyboard only. Clicking on keys and commands doesn't work.
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Source Manifest.json

{"update_url": "https://clients2.google.com/service/update2/crx", "description": "Adds an RPN calculator as a browser action button.", "manifest_version": 2, "name": "RPN Calculator", "version": "1.0", "homepage_url": "https://github.com/mconca/rpn-web-ext", "icons": { "32": "icons/calc-32.png", "48": "icons/calc-48.png" }, "browser_action": { "default_icon": { "32": "icons/calc-32.png", "48": "icons/calc-48.png" }, "default_title": "RPN Calculator", "default_popup": "popup/rpncalc.html" }}
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How to download and manually install RPN Calculator extension for Chrome

Looking for a way to install RPN Calculator extensions for Chrome, you can search for them in the Chrome Web Store, clicking the "Add to Chrome" button, and following the straightforward process.

However, you may need to install RPN Calculator extensions manually, this article outlines two simple methods to effortlessly install RPN Calculator extensions, whether they come as unpacked folders in compressed formats like .zip or as .crx files.

Method 1: Download RPN Calculator extension and manually install through Drag &Drop

If you ever need to manually install a RPN Calculator extension for Chrome, don't worry, it's a simple process. Just follow these easy steps, and you will have your extension ready to use in no time.

Step 1: Download the RPN Calculator Extension by clicking the "Download CRX" button on the website.

Look for the RPN Calculator extension you wish to install. Go to the website and download the RPN Calculator extension package, which is usually a .CRX file and comes in a zipped file. Here ".crx" file is the format for RPN Calculator extension that contains all the data.

Step 2: Extract &Arrange Files

Once the file is downloaded, extract that file into its own folder. Similarly, give that extension files a permanent home. In other words, keep it in a folder that you don't accidentally delete it because these files will be needed to make that extension work.

Step 3: Go to the Chrome Extensions Page

Open Google Chrome and in the address bar, type chrome://extensions; it will open the Google Chrome extensions page. Make sure that "My extensions" is selected in the sidebar.

Step 4: Drag and Drop the Extension

Now, go to the folder where you extracted the RPN Calculator extension and drag &drop the extension file from there anywhere onto the extension page within Google Chrome.

Step 5: Complete the Installation

Once you drag and drop the extension file, follow the steps that Google Chrome takes you through. Similarly, if the extension file is of .crx file format, you will be required to review the permissions and then add the extension.

Now, you can manage that added extension as you would like to with any other Chrome extension that you added through Chrome Webstore. Its icon will also appear in the Google Chrome Menu on the right side of the address bar once you activate it.

Method 2: Download RPN Calculator extension for Chrome and install in Developer Mode

This is another method to install RPN Calculator extension manually, but the twist is that here, you install by enabling the developer mode option provided in Google Chrome. This mode is commonly used for testing extensions or running unpublished tools.

Step 1: Download the RPN Calculator extension file

Select and download the RPN Calculator extension by clicking the 'Download CRX' button on the website.

Step 2: Extract the downloaded contents

Convert the file to a ZIP file if it is in CRX format then extract the RPN Calculator extension zip file or folder that you downloaded. Make sure you extract it using the same folder name and keep it safely in another folder, so you don't delete it by mistake. The extracted folder will be needed to keep your RPN Calculator extension running.

Step 3: Open Chrome Extension Setting Page

In the address bar of Google Chrome, type chrome://extensions and open the Chrome Extension Page.

Step 4: Enable Developer Mode

After opening the Chrome Extension page, look at the top right side, and you will find the toggle option of "Developer mode."Simply enable that developer mode option.

Step 5: Load the Unpacked Extension

Once you enable the developer mode option, you will see the menu of Load Unpacked, Pack Extensions and Update. From that, select the option "Load unpacked."

Step 6: Select the Extension Folder

Once the pop-up opens upon clicking Load unpacked, select the RPN Calculator extension directory and click on the "Select Folder "button.

Step 7: Confirm and Install

After you select an extension folder of a Google Chrome extension you're installing manually, confirm its installation for the final time and let the installation complete.

Conclusion

Here we've made a step-by-step guide on How to manually install RPN Calculator extension in 2 ways. We hope this guide proves helpful.

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User reviews

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Robert Lowe (ID: 000000fe63a262b5) Voted 5 ★ - Updated 09/12/2022 This is just the thing I needed! I use it when grading PDF documents in Canvas. I have been an HP calculator user from all the way back when HP was a good company. I had been using my trust 48GX for this, but it's overkill for adding up grades. It's much more convenient to have RPN entry directly in my browser, and this hits the sweet spot of the functions I need vs what is easy to use via keyboard. I really like the onscreen reference too!

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Jared M Johnson (ID: 0000005c5c07d060) Voted 5 ★ - Updated 07/30/2021 Great calculator, just wish I could copy/paste the input/output.