If you've ever used a Wi-Fi router to connect to the internet, you've probably wondered what all the blinking lights mean.

Odds are, if you like neon lights, you’re not thrilled with the LED faux-“neon” strips that are supposed to replace them.

Modern technology builds on abstractions. Most application programmers today don’t know what a non-maskable interrupt is, nor should they have to. Even fewer understand register coloring or ...