File transfer refers to a function whereby the file is copied from one computer to another.
We here refer especially to the transfer between computers linked to a national or an international network. Perhaps you want to transfer a program to be processed by another computer with more efficiency, free capacity, higher quality display or other properties required by the program. Or you might want to download public domain programs or other freely distributable material. The files themselves also differ, and owing to the internal structure of individual computers, files with identical contents can be presented in different computers in different manners. Other files, such as the programs translated into the machine language, graphics, spreadsheet computation or word processing files, etc. must be coded for the transfer.