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 ...
A DAT file you receive as an email attachment usually comes in the form of a winmail.dat or ATT0001.dat file. 1  These types of DAT files are probably malformed attachments from a Microsoft email client like Outlook, Outlook Express, Windows Live Mail, or Microsoft Exchange.