Microcontrollers

Part of speech: noun

Definitions

1. A small programmable chip used to execute dedicated functions in electronic systems
2. These compact processing units are integral to controlling various automated processes in diverse applications
3. A tiny embedded chip that can be programmed to manage specific operations within an electronic circuit

Etymology: "Microcontrollers" is the plural of "microcontroller," a compound formed from "micro-" and "controller." The first part comes from the Greek "mikros," meaning "small," which reached English through the combining form "micro-," used to build scientific and technical terms. The second part is the English noun "controller," from the verb "control," meaning one who directs or regulates something. Put together, the parts describe exactly what the device is: a small controller, a chip that holds a processor, memory and input/output circuits on one piece of silicon and carries out instructions to regulate other hardware. The compound is a plain technical coinage built from familiar parts rather than a word with a dramatic backstory, so its meaning follows directly from its pieces.