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 services, 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 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 are not included.Note: Light and different displays may cause the color of the item in the a little different from the real thing. The measurement allowed error is +/- 1-3cm.