The micro:bit is a tiny computer that makes coding tangible and promotes digital creativity.
You create a program to tell it what to do using one of the online code editors, and download it to your computer as a .hex file - a version of your program that your micro:bit can read.
Transfer your program
When you've created your program in the online editor, transfer it to your micro:bit to make it run independently of your computer. You can even unplug your micro:bit from the computer, attach a battery pack, and your program still runs.