Datasheet

will find 20 gold-tabbed edge pins and five ring connectors (three for digital/analogue I/O,
two for power and ground) for hooking up external components. The tabs with larger
holes can be easily used with alligator clips to prototype added components quickly.
The micro:bit has even supplied an intuitive mobile app that lets you send your code to
your micro:bit over Bluetooth (without using a USB cable). With this app you will be able
to interact with your micro:bit on a higher level of accessibility.
Includes:
 1x micro:bit Board
 1x micro USB Cable --- 150 mm
 1x Battery Holder for 2xAAA
 2x AAA Batteries
Features:
 32-bit ARM Cortex-M0 CPU
 256KB Flash
 16KB RAM
 5x5 Red LED Array
 Two Programmable Buttons
 On-board Light, Compass, Accelerometer and Temp Sensors
 BLE Smart Antenna
 Three Digital/Analog Input/Output Rings
 Two Power Rings --- 3V and GND
 20-pin Edge Connector
 MicroUSB Connector
 JST-PH Battery Connector (Not JST-XH)
 Reset Button with Status LED