The purpose of this book is to get you started on the road to creating things
using micro-controllers. We will discuss only enough electronics for you to
make the circuits, and only enough programming for you to get started. The
focus will be on your making things. It is my hope that as you go through this
book you will be flooded with ideas of things that you can make. So let’s get
going...
The first question we’ll start with is: