Right then. Here at Lang Towers we looked at Raspberry Pi, decided we didn't much like it and completely ignored it. But now the BBC have decided to make, promote and dole out a microcontroller which they've called the BBC Microbit and they are giving it away to kids all over the country. Millions of them. Soon it will be commercial and some kind people have slung one this way for a bit for me to have a bash at and see what I think. So, thanks to them, and here beginneth said bash.

Firstly, what is it?