Human-Machine Interface

HMI or Human-Machine Interface is the 'layer' that separates a human that is operating a machine from the machine itself. One example of a HMI is the computer hardware and software that enables a single operator to monitor and control a large machinery while comfortable in the operators booth.

HMI used to be called MMIs (man-machine interfaces) but were changed to be politically correct.

See also:

• SCADA
• Programmable logic controller
• Human-computer interface
• Distributed Control System

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