Introduction:  RP2040-0.42LCD is a high-performance Development board , Integrated 0.42 'LCD (70 x 40 resolution).with flexible digital interfaces. It incorporates Raspberry Pi's RP2040 microcontroller chip.The RP2040 features a dual-core Arm Cortex-M0+ processor clocked at 133MHz with 264KB internal SRAM and 2MB internal flash storage.  Inside the RP2040 is a 'permanent ROM' USB UF2 bootloader. What that means is when you want to program new firmware, you can hold down the BOOTSEL button while plugging it into USB (or pulling down the RUN/Reset pin to ground) and it will appear as a USB disk drive you can drag the firmware onto.  There is great C/C++ support, unofficial (but really good) Arduinosupport, You can also use micropthon and circuitpython.     Features:  RP2040 32-bit Cortex M0+ dual core running at ~125 MHz @ 3.3Vlogic and power.  264 KB RAM.  2 MB SPI FLASH chip for storing files and CircuitPython/MicroPython code storage. No EEPROM.  Four 12 bit ADCs (one more than Pico) Two I2C, Two SPI and two UART periphe. rals.  Integrated 0.42 'LCD.  Both Reset button and Bootloader select button for quick restarts (no unplugging-replugging to relaunch code) 1x RGB(GPIO2).  3.3V power indicator LED.  3.3V regulator with 500mA peak current output.  USB Type C connector lets you access built-in ROM USB bootloader and serial port debugging.  Size & Weight:  Size: 23.5 x 18 mm.  Weight: 2.5g.     Package includes:  1 x RP2040 Development Board with 0.42 inch LCD