Radio is a way of sending and receiving messages and BBC micro:bits can use radio waves to communicate with each other

Buttons are a very common input device. Your micro:bit has two buttons you can program, and a reset button. The BBC micro:bit is the spiritual successor of the BBC Micro of the 1980s, which itself introduced a generation of children to computing. The BBC micro:bit carries on this decades 30-year tradition and does it 18 times faster and it's also 70 times smaller than its predecessor. Inputs and outputs are an important part of any computer system. As a very small computer, the BBC micro:bit has plenty of inputs and outputs to learn about and use with electrical components Your BBC micro:bit can be programmed to make a wide variety of sounds - from single notes, tones and beats to your own musical compositions. A temperature sensor is an input device that measures temperature. Your BBC micro:bit has a temperature sensor inside the processor which can give you an approximation of the air temperature around it.A light sensor is an input device that measures light levels. Your BBC micro:bit uses the LEDs to sense the levels of light and lets you program your micro:bit as a light sensor Detects motion and direction - create games which use shaking motions or directions with the built-in sensors and compass Connect the BBC micro:bit to your phone using Bluetooth to take selfies without touching your phone On the bottom edge of your BBC micro:bit there are 25 gold strips, called pins. These pins allow you to really get creative. You can create circuits, connect external things like buzzers and motors and make your own fun projects. A digital compass is an input sensor that detects magnetic fields. Your BBC micro:bit has an inbuilt compass that can detect the direction in which it is facing

An LED, or light-emitting diode is an output device that gives off light. Your BBC micro:bit V2 has a display of 25 LEDs for you to program Tap the capacitive button as an input for your projects - stop/start music, start a timer, run a program or whatever you decide! USBs, or Universal Serial Buses, are used to connect, communicate and power computers and digital devices. The BBC micro:bit has a USB interface to allow you to connect your computer to your micro:bit using a micro USB cable and power your micro:bit.A processor is sometimes called the ‘brains’ of a computer and your BBC micro:bit has a microprocessor inside it. It’s an essential part of your micro:bit as it runs the programs you write.