What is micro:bit?

The BBC micro:bit is a pocket-sized computer that introduces you to how software and hardware work together. It has a LED light display, buttons, sensors and many input/output features that you can program and physically interact with. The latest micro:bit adds sound sensing and playback capabilities. It has been created and developed by the Micro:bit Educational Foundation.

It is more than a microcontroller because it includes input and output devices like buttons and a LED display as well, making it more like a computer.

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an icon representing micro:bit speaker Speaker to play back sounds and melodies and make some noise!

an icon representing micro:bit microphone Microphone to respond to sounds. A microphone LED, lets you know when the microphone is in use.

an icon representing the LEDs on micro:bit 25 red LED lights that can flash messages and be used to create games.

An icon representing Button A on micro:bit An icon representing B button on micro:bit Two programmable buttons that can be used to control games or pause and skip songs on a music playlist.

An icon of a person running representing the accelerometer Accelerometer to detect motion and know when you're on the move.

An icon representing a compass on a micro:bit Built-in compass to know which direction you're heading in.

An icon represented by a radio to show radio and Bluetooth supported on micro:bit Radio and Bluetooth transmitter and receiver to let you interact with mobile devices wirelessly.

An icon represented by a pushpin to shown pins on micro:bit A range of input and output pins to let you connect the micro:bit to other devices via it’s Edge Connector

Information extracted from here