Closed-loop systems are able to correct in order to meet target results. Normally a sensor is used to look at the output and adjust the process accordingly. This is called feedback.
A file with an extension of .DAT is known as a Data (General). These .DAT files can be opened on Windows and Apple using programs ...
Data Files (14 file extensions). Description: The .DAT file extension is widely used by different programs to store data. Because different programs use .DAT files in different ways, what you can do with the file depends on what program created it. In general, a good text editor like EditPlus is your best bet for vieweing and editing .DAT files.