Comment Re:No shit (Score 3, Informative) 248
Oh, you children! Something doesn't need transistors or ICs to be digital (and things with transistors and ICs can still be analog). Switches and relay logic is digital, and you don't get much simpler than turning on the switch to light the light. In this case the voltage is the signal, and its message is "I want some light". It doesn't matter if the switch is controlling DC or AC, it is still a basically digital on/off concept. Dimmers can be either digital or analog in design, but in function the end result is that they are analog in nature, in that they allow for an apparent variable range of output (light) from a single source..
Remember, there are 10 types of people in the world, those who understand binary and those who don't.