Raspberry Pi Pico Linux
The RISC-V based Raspberry Pi Pico microcontroller is commonly used for analog and digital control, optionally with WiFi or Bluetooth wireless connectivity. While the full Raspberry Pi boards have a general purpose ARM CPU with enough storage and RAM capable of being used as a PC, the Pico is not commonly used for general purpose computing.
The multi-core CPU of the Pi Pico is capable of running parallel multi-threaded programs. The Pico Cortex-M or RISC-V Hazard3 CPUs lacks a memory management unit (MMU). Without an MMU, the Pico is not so effective at running a preemptive multitasking OS like a full Linux distribution. However, it is possible to run a minimal Linux kernel and user space. Provided a Pico board with enough memory, it’s possible to run a minimal Linux distribution on the Pico. The analog and digital I/O pins can be used for VGA output from the Pico.