PLC and HMI Systems

The PLC stand for Programmable Logic Controller. They are most usually applied in industrial applications, it generally lacks a keyboard, mouse, and a monitor, as it is normally programmed to run a system or machine.

A HMI sometimes also known as a MMI. HMI is stand for Human to Machine Interface and MMI is stand for Man to Machine Interface. Even though MMI is not supposed to be politically correct now that term less and less.