A file extension is a suffix that is added to the end of a file name after a dot. It is usually two to four letters long. File extensions help Windows and other operating systems to know the standard ...
The MP3 made the iPod possible. Photo: Jim Merithew/Cult of Mac July 14, 1995: The MP3 file format receives its official name as the new .bit file extension gets changed to .mp3. The technology allows ...