How to check your calculus integrals on a TI-84 Handheld Calculator

Integration is often a fairly arduous maths exercise, and we are prone to making silly algebra errors when doing them. Wouldn’t it be nice if we had an easy way of checking our solutions? Checking integrals, especially indefinite integrals, is not always a straightforward thing to do on a handheld calculator. Fortunately, there are some […]

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PetDumb’s Personality Questionnaire

Hello and congratulations on your choice to work at PetDumb. We are not a progressive company and we are neither pleased nor displeased with your interest. All that is left to finalize your employment application is to fill out the following personality questionnaire and answer each question correctly. Please answer the following questions and submit […]

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Adding a Windows Explorer FTP Webserver Shortcut to your Computer

If you repeatedly do any kind of work on a webserver, such as updating files directly on the server, or backing up files by zipping them up and downloading them, you will probably benefit from adding an FTP shortcut to your ‘My Computer’ folder. What this means is that you can access your webserver files […]

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Mouse without Borders

Mouse Without Borders is a free Microsoft Garage utility that you to use one keyboard and mouse with multiple computers. It allows the cursor to fly off the edge of one monitor and appear in the other monitor where you can do stuff before flying the cursor back to the first computer’s screen. Below is […]

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The Odds of Blind Man’s Bluff

Other names; Indian poker, squaw poker, Indian head, baseball Blind Man’s Bluff is a simple poker game in which each player is dealt a single card and bets that his or her card is higher than the cards held by any other player. The unusual thing about this game is that the player can see […]

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Summation Relationships Between Figurate Numbers

See the PDF File: Figurate Numbers

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Magento: Add attribute columns in ‘Manage Products’ grid

Magento does not provide us with the ability to choose which attributes are included as columns in the Manage Products grid but it’s fairly simple to make the necessary code changes. The code that generates the Manage Products grid is at /app/code/core/Mage/Adminhtml/Block/Catalog/Product/Grid.php. The first thing you need to do is copy Grid.php into to the […]

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Posted in Web Development | Tagged as: | 11 Comments

Donate Your old Computer to Science

Do you have an old computer lying around that doesn’t work or that you never use? Don’t throw it away! Donate your old and unused computers to science! All you have to do is find your friendly (more likely unsociable) neighborhood nerd, hand him or her the computer, and say, “It’s all yours”. You’d be […]

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Magento: Programmatically Updating SKUs in Bulk

Magento does not make it easy to change SKUs in bulk. Try to do it via the import/export or dataflow profiles and you run into all kinds of problems. There is, however, a fairly easy way to do it and it simply involves adding a php script to your server and a CSV file of […]

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Posted in Web Development | Tagged as: , , | 27 Comments

Dell Inspiron 1545, Time of Day Clock Stopped Error, Replacing Clock Battery

Recently a friend’s laptop stopped working. The screen would go black and display only the message; “Time-of-day clock stopped”. The error occurred before the start-up sequence reached the boot options. After some research I discovered that it’s actually a common problem for the Dell Inspiron. I also learned that a little coin cell battery needs […]

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Posted in Other Stuff | Tagged as: , , | 14 Comments
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