Well it could be every few miliseconds. Sometimes these sort of screwdrivers can drive other processes (e.g. once it confirms that the screw is correctly affix

Well it could be every few miliseconds. Sometimes these sort of screwdrivers can drive other processes (e.g. once it confirms that the screw is correctly affixed, send a message to the manufacturing system to tick off that 'task' as complete at this station, and prompt the operative to start the next assembly task - the piece cannot move to the next manufacturing process until the screwdriver has confirmed all bolts are affixed at the right settings).