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 DAT file extension can also be used as the default file type for video compact disc (VCD) files. The data is encoded and stored in a DAT file, which can then be played by a software VCD player. The DAT file will contain the audio and video stream, which is typically encoded in a MPEG file format.