User manual

Board layout - back
1. USB Plug (Micro-USB plug) – labelled USB on the board
2. Button R (reset button) – labelled Reset on the board
3. Status LED – not labelled on the board
4. Battery socket – labelled Battery on the board
There are additional copper pins on the back of the board that will not be connected
to anything. These are to facilitate labelling, while ensuring that a board plugged in
the wrong way around doesn't damage any external accessory.
Other components
1. Accelerometer
2. Compass
3. Bluetooth Smart Technology Antenna
4. AAA Battery Holder - not labelled on the board
5. Processor (Cortex M0)
6. P3 – P22 plus P0, P1 and P2 pins from left to right with edge connector at the
bottom. Referred to as 'pins' when labelling that part of the board. Text will talk about
'pins' when referring to individual connections or the general way of connecting to the
board – labelled PINS on the board
The runtime includes:
• A simple, unified OO model for the device
• A lightweight, non-pre-emptive fibre scheduler
• Managed types for immutable strings and bitmapped images
• A message bus for shipping software and hardware events (eg button presses, device in
freefall, scroll text complete)
• LED matrix display driver
• A simple image manipulation library
• Electronic compass driver
• Accelerometer driver
• Button sensor
• Inference-based digital and analogue I/O abstractions
• Bluetooth Smart Technology over-the-air programing
• Bluetooth Smart Technology peripheral mode exposure of runtime components
• Capacitive sense pin
http://www.bbc.co.uk/mediacentre/mediapacks/microbit/specs 17/03/17