The
user interface, in the
industrial design field of
human–machine interaction, is the space where interactions between humans and machines occur. The goal of this interaction is to allow effective operation and control of the machine from the human end, whilst the machine simultaneously feeds back information that aids the operators' decision making process. Examples of this broad concept of user interfaces include the interactive aspects of computer
operating systems, hand
tools,
heavy machinery operator controls, and
process controls. The design considerations applicable when creating user interfaces are related to or involve such disciplines as
ergonomics and
psychology.