System file
Image file
Temporary File
system file hgu
backupfile
animation/moviefile
TMP and TEMP files are temporary and can be safely deleted. They are usually dumped on the hard drive and forgotten about by some programs if they crashed and were meant to delete them.
File extensions tell the computer what kind of program was used to create it, and are usually three letters. Common file extensions are .txt .doc .wps
The extension. It tells Windows what kind of a file it is. For example, a file with the ".doc" extension is a Microsoft Word Document.
XLS is the shorthand for Microsoft Excel file extension. A file extension is the group of letters following a period in a file name, denoting what kind of file it is.
.jpg is a picture format.
flv