In This Chapter
Understanding the evolution of the Raspberry Pi
Exploring the options of the general-purpose input/output (GPIO) port
Discovering the secrets of the revision number held in your Pi
Finding the impact of your Raspberry Pi model on projects in this book
In the beginning was the Raspberry Pi, and all was good. Then the Pi begat the revision 2 with more memory, which begat the Model A, which begat … well, you get the idea. With all this begating, we want to introduce you to what the Raspberry family looks like and how what you have may affect the projects you want to do. In this chapter, we show you how to understand the differences in the versions of Raspberry Pi that have been produced. By looking at the memory, GPIO, and video and processor variations that have been produced, you can see how the Raspberry Pi has improved over the years.
The original Raspberry Pi, like so many firsts, did not need a qualifier to its name, but it had one. It was known as the Raspberry Pi ...