1. Support the PXT graphical programming interface developed by 2. Support WINDOWS, MACOS, IOS, Android and other operating 3. The programming environment is based on WEB , no need to download additional compilers4. the computer through USB programming and emulation5. The mobile terminal wirelessly writes and emulates the through Bluetooth:bit V1.5 version parametersMemory: 256kb Flash 16kb RAMExternal chip: NXP KL26Z 16KB RAMWorking current: 90MAConnection: The interface adopts a flat designI2C: bus sharing (multiplexing) I2C busWireless: 2.4GHZ radio/Bluetooth 4.0Supports a of mainstream programming languages including JAVASRIPT, PHYTHON, MBED CApplicable population: primary school, middle school and senior high school: windows, MacOS, IOS, Android, etcProgramming software: javasript, python, mbed C, etcIOBIT V2.0 expansion board parametersPower supply mode: USB 5V 1AOnboard Features:5V 1A resettable fuse;Buzzer (P0 interface);3.5mm audio port (P0 interface);Toggle switch (for switching the buzzer music output and audio port sound output);USB power switch5 gold , seamless connection with microbit 0, 1, 2, 3V, GND pins to protect microbit gold 5V and 3.3V power interface, support 3-5V sensor module (onboard 5V and 3.3V power indicator)Pins include: 0, 1, 2, 3, 4, 5, 6, 7, 8, 9, 10, 11, 12, 13, 14, 15, 16, 19, 20Analog feet: 0, 1, 2Material:PCBcolour:blackPackage Contents:1 * BBC :bit Development board (Random color, 't accept the specified color)1 * IO BIT V2. 0 Expansion BoardOnly the above package content, other products are not included.Note: Light and different displays may cause the color of the item in the picture a little different from the real thing. The measurement allowed error is +/- 1-3cm.