Even for only $35 a pop, 10 million units sold is no joking number. Especially for something that’s been going on for four years, where it has had the possibility of going out of fashion or being displaced by something newer or even better. But that is exactly the momentous achievement that the Raspberry Pi is able to brag about today. But what is all the fuss about an electronics board that doesn’t even come with case? And how exactly did the Raspberry Pi gain that much attention, users, and loyalty? We take a look back in time to find out.