- A complete computer that is contained on a single chip. Such a chip must have a CPU, memory, a clock, and input/output circuits. These chips may be used in countless items, including automobiles, toys, appliances, clocks, and so on. Its abbreviation is MCU. Also spelled micro-controller. Also called microcontroller unit, microcomputer (2), computer-on-a-chip, or one-chip computer.
- synonym microcomputer
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