Everything up to this point has been necessary groundwork. I’ve explained conceptually what computers do and have given you the tools to understand the slightly alien numbers that they use; but I’ve said nothing so far about what computers actually are, and it’s well past time. We will return to hexadecimal numbers repeatedly in this book; I’ve said nothing thus far about hex multiplication or bit-banging.
What exactly do you think that means? We should have discussed what computers are long before?