GitHub - vasanthk/how-web-works: What happens behind the scenes when we type www.google.com in a browser?

To pick a zero point, let's choose the Enter key on the keyboard hitting the bottom of its range. At this point, an electrical circuit specific to the enter key is closed (either directly or capacitively). This allows a small amount of current to flow into the logic circuitry of the keyboard, which scans the state of each key switch, debounces the electrical noise of the rapid intermittent closure

[YusukeIwaki]

めっちゃ詳しい。