This book presents a series of activities to teach the basics of computer networks. While you will not
learn all aspects of computer networking, we hope that it will serve as a good starting point.
To network micro:bits, we use custom micro:bit radio to radio communication. When one hears the
word radio, what comes to mind is the radio that blasts out tunes from your favourite radio broadcasting
channel. But, a radio, or a radio transceiver (transmitter/receiver), is used in communications to
generate and receive radio waves that contain information such as audio, video or digital data. And
all micro:bits have built-in radios1
Each chapter presents interesting challenges in radio communications and networking with micro:bits.
After every few chapters, there’s an exciting game to look forward to! In the programming sections,
overcome those challenges2
Writing this book, we have assumed no knowledge of radio communications or networking.
However, we assume that you have written programs with a micro:bit. For example, we expect that
you are familiar with variables, if-then-else statements, and loops. The activities in each chapter will
provide ample opportunity to put this knowledge into practice.