the interface through which a person interacts with a computer or machine; human-machine interface

graphical user interface (GUI) used in computing

The combination of software and hardware used to exchange information between a computer system and its user.

A substance that reduces surface tension, such as a detergent, emulsifier, or foaming agent; soap is a common example.

(telecommunications) a set of protocols used for link management in Frame Relay networks; often abbreviated as LMI

A computer interface that allows users to interact with devices through visual icons and audio indicators; also known as GUI.