Hack tech fact

The file system   The DOS File system  lets us store information in named files.  You can call a file anything you like which might help you remember what it contains as long as you follow certain basic rules. 1.   The names can be up to 8 characters long. You can use letters and digits but only a few punctuation marks (! $ % # ~ @ - () _ {}). You can't exceed 8 characters or use spaces or characters like * or ? or +. Names are case-insensitive, i.e. it doesn't matter whether you use capitals or lowercase letters; “A” and “a” are treated as the same thing.  2. File name can also have an extension  of up to three characters, which describes the type of file. Three are some standard extensions, but you don't have to use them. Examples include COM and EXE for executable programs, TXT for files, BAK for backup copies of the files, or CPP for C++ program files. The extension is separated by a dot from the rest of the filename.  For example, a file called FILENAME.EXT has an 8 ch