Changes

== Analog Output ==

Continually varying signals, rather than discrete "steps". How does a digital microprocessor create an analog output?

PWM, duty cycle, and effective voltage.

* It looks like a MacBook napping...

* Q: Drive this dimming example with the light sensor from before.

* Q: Does yours turn on when it is light, or does it turn off? Switch this to give it the opposite behavior, in either hardware or software. You could do either!