You can now buy Raspberry Pi RP2040 MCU for one dollar - CNX Software
RP2040 and Pico: All New Microcontroller and Development Board
Adafruit's ItsyBitsy RP2040 Brings Raspberry Pi's In-House
Microcontroller chip RP2040 Zero type Pico Raspberry Pi
RP2040 - Raspberry's first microcontroller chip
Raspberry Pi Pico is a low-cost, high-performance microcontroller board with flexible digital interfaces. The Pico is programmable in MicroPython and C++.
Raspberry Pi Pico
Raspberry Pi - Wikipedia
RP2040-LCD-0.96, A Low-Cost, High-Performance Pico-Like MCU Board
The Raspberry Pi Pico W builds upon the great cost-for-performance metrics of the Pico and add WiFi to the board. The Pico W features the same attributes as the Raspberry Pi Pico and also incorporates an Infineon CYW43439 wireless chip. CYW43439 supports IEEE 802.11 b/g/n wireless LAN, and Bluetooth 5.2. The Raspberry Pi Pico line is a low-cost, high-performance microcontroller board with flexible digital interfaces.
Raspberry Pi Pico W
RP2040-Zero,a Pico-like MCU board based on Raspberry Pi RP2040,Castellated module, suitable for SMD applications. RP2040 microcontroller chip designed
waveshare RP2040-Zero Pico-Like MCU Board Based on Raspberry Pi MCU RP2040 Mini Version, Dual-core Arm Cortex M0+ Processor, Flexible Clock Running up
WeAct Studio Pico Download
Buy a Raspberry Pi Pico – Raspberry Pi
Raspberry Pi Foundation new RP2040 microcontroller and Raspberry
RP2040 - A microcontroller from Raspberry Pi - SparkFun Electronics
Buy a RP2040 – Raspberry Pi