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 ...
The function of each file is different. System.dat stores all the information about software, hardware, security, default Windows settings, and how Windows will perform. User.dat stores all settings that each user selects; these settings will override settings stored in the System.dat file.