DVDs are based on the UDF format and CD-R and CD-RW disks use UDF as an optional second standard. UDF, defined by the Optical Technology Storage Association (OTSA), is a subset of ISO 13346, an interchange standard for non-sequential recording of data.
The user interface or humanâmachine interface is the part of the machine that handles the humanâmachine interaction. Membrane switches, rubber keypads and touchscreens are examples of the physical part of the Human Machine Interface which we can see and touch.
Types of User Interfaces. To work with a system, the users need to be able to control the system and assess the state of the system. Definition of User Interface. In computer science and human-computer interaction, the user interface (of a computer program) refers to the graphical, textual and auditory information the program presents to the user.