Digital electronics means thinking of a transistor as a switch. It&#x27;s got three terminals, if there&#x27;s a positive voltage on the control terminal then the other two are connected and power can flow through it. That&#x27;s basically it.<p>If you connect billions of switches in the right pattern you get a computer. Billions of little switches clicking on and off, no more, no less. No pixies or magic dust involved.