IT lexicon Hardware Microcontroller

Microcontroller MCU

Hardware På svenska → Updated: 2026-05-23

Mini-computer on a chip — CPU + memory + I/O in a few mm². Powers IoT devices, toys, appliances.

Classics: Arduino (AVR), ESP32 (Wi-Fi built in), Raspberry Pi Pico (RP2040). Low power, cheap, runs on bare metal without an OS. Programmed in C/C++/MicroPython.

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