Data validation in Excel lets you restrict what can be entered into a cell, whether whole numbers, decimals, dates, or a certain number of characters. However, one of the most powerful capabilities of ...

In many cases, you want people to enter a valid date, and no other type of information, when they're putting data into a cell in Microsoft Excel. For example, you might be asking people to record days ...

Microsoft Excel has been the premier spreadsheet software for decades, since outdoing the once venerable Lotus 1-2-3, the first killer app for PCs in the 1980s. And Excel's dominance has yet to be ...