File name Extensions

 Every time when we save a file in our computer, it will add an extension to it.  When we need to save a file, it will ask with what extension we would like to save it as but most of the time the application itself suggest for the correct extension that is needed to be saved with the extension. It is important to know at least a few basic extensions, as selecting the right one to save our files. Because it will inform our computer with what program to open it. 

Let me here give you a few  basic common extensions: .doc is a Word file, .xls is a Excel file, .pub is a Publisher file and .ppt is a PowerPoint file these are some of Microsoft products. Among the programs used on Internet, here some most common ones: .mp3 wihch is a sound file, .pdf is a portable document file that is highly used when you need to open ebook, and .mpg is a movie, .png is photograph that is a high quality transparent picture, .jpg is also a photograph, .gif is a graphic and finally .htm is a web page file. As I said, it is important for we to know at least a few basic extensions in order to be able to save your documents. Even if you use the wrong type of extension it will save it, but we not able to open it in future. We may also forget what data this file has in the first place. It is better to take care and remember some extensions.