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If you're setting up a worksheet only for yourself, you can simply leave an empty cell for this purpose. To check it, just type in an x or any other character. Then use a formula with the =isblank() function to make the contents of that cell affect the rest of the spreadsheet. But you might want something more mouse-friendly--especially if you're designing a spreadsheet for other people. I've tested the technique below on Excel 2007, 2010, and 2013. I'm not sure about earlier versions. You can insert checkboxes on Excel's Developer tab. Unfortunately, that tab is hidden by default. To make it visible in Excel 2010 or 2013, click the File tab and select Options. ClickCustomize Ribbon. You'll see two lists. Make sure that the one on the right is titled Main Tabs. Check Developer.

Confronting errors with the new Microsoft Office installation? If yes, then you have reached the right page. Follow the below mentioned step-by-step instructions to uninstall Office 2003, Office 2007 or Office 2010:

New research from Kaspersky Lab shows that the number of phishing attacks on social networks has increased in the first quarter of 2010, especially at Facebook, the fourth most popular online target.

Throughout the year I try to share resources and information with you that I think will be helpful for you. Often times these resources will include links to free eBooks that we make available on a variety of topics. Today, I thought I would post a large collection of eBooks for you here so that you can find them in one place and consume them as you see fit. Also, if you find this list helpful, please share it with your peers and colleagues so that they too can benefit from these resources.

App Inventor in the Classroom - ACSE Presentation by Peter Beens

What a long, strange trip it's been!  How The Giant computers transformed from to modern technology. Yes, I am talking about The History of Computer which started it's journey in 1940s Complex number Calculater to iPad 2010. But there are so many of us who love to see the statistics. Here, we have found an infographic in which you can see the massive size of Computer History in numbers

An afterschool program in DC that has been using App Inventor since October 2010.  The youngest student is 8 and the oldest is 17.

Sometimes a document created in MS Office Word can be a bit longer than you actually required. In that situation, make use of the "Shrink to Fit" option to reduce the length of your document by considerably shrinking the Font size.

That got me pondering: Which versions of Windows have been great, and which have been dogs? Here's my list of the 5 best and 5 worst.

A lot of website security awareness has been raised over the last week since the release of a simple-to-use website user account hijacking tool called FireSheep.  The tool gives attackers temporary full access to your web accounts like Facebook, Twitter, and Microsoft Hotmail.

15 Google Interview Questions That Will Make You Feel Stupid

The US was today accused of opening up a dramatic new front against WikiLeaks, effectively "killing" its web address just days after Amazon pulled the site from its servers following political pressure.

Techniques like "evercookies" and "device fingerprinting" are new and controversial in the online ad industry, but they're widely used by firms that seek to catch cyber criminals.

How Facebook fixed the site: they turned it off and on again. Literally An unusual database problem at the giant social networking site could only be cured by taking the sort of action you normally take with a misbehaving PC

Imagine Cup-Solving the Worlds Problems Through Software

Supernatural Collective Nouns.  Classes of classes

How to build a Twitter Client with App Inventor for the Android

Test Flights Into the Google Cloud - a view on the forthcoming Chrome OS 

While the phrase "founding fathers" is often used in conjunction with men like Benjamin Franklin, Thomas Jefferson and George Washington, we wanted the think about the phrase on the global level. And what is more global than the world wide web?

Google attempts to return relevant search results in the blink of an eye. But in future it could go one better, delivering search results to its users even before they know that they want the information.