User interface (UI) is a mediator between human and machine (device) that enables the use of the car for the humans provides. User interfaces", a spectacular and palpable a tool that the user directly with it. This term user, the user interface and the user interface together have translated.

any user interface, both the mechanism of basic is equipped with:
within the alliance; the user through the user interface, car steering wheel.
& rsquo;. machine of the valve, the user interface, commands, user responses and reactions of the show.

In this case say that the user and the user interface, etc. interact with each other.