Definition of "microcontroller" []

• A microcomputer on a single chip, used to control some device such as an automobile engine or a toy. (noun)

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• "This year's contest is sponsored by Microchip, and together we've got rad prizes to give to the best in microcontroller Halloween projects."
• "To do that, Mr. Hinton said, the company took the unusual approach of storing power management-software in a built-in component called a microcontroller, which is usually a separate chip."
• "Martin Kail: And, of course, the trapdoor would be connected to an Arduino microcontroller, which is rigged to a seat sensor."