Did I bring anything?
	I hope so, but a lot of this stuff is heavy
	Show and tell (maybe)

A very central component:  Transistors
	Three connections
	Base: "switch" input, allows power to flow from collector to emitter
	Collector:  Input power
	Emitter:  Output
	Kinda like a relay, but without the isolation
	NOT binary.  A little power to the base allows a little from collector to emitter
	This makes it useful for analog electronics
		Like an amplifier!
	A transistor is thus a semiconductor
	But, we need to go a different direction, toward digital electronics

A note about that though:
	I have a "digital" amp in my living room
	The controls are digital
	The amplification process is analog
	So, blu-player to amp:
		Optical audio out of the blu-ray player
		Decent midrange DAC to convert it for the amp	
		Into an analog input without much cable
		Out to speakers with analog crossover
	So "digital", when it comes to audio, is at best partial
	Clay's effects pedal example
		
Only 0 and 1:
	For logic circuit diagrams we'll do:
	0 means "low enough"
	1 means "high enough"
	What's "enough"?  More than something
	Larger something:  Bigger switching delay, more power use
	Smaller something:  Smaller switching delay, but could it be too small to detect?
	So it depends on the application.  CPU voltage is usually less than 2.
	We'll consider transistors to be "on" or "off"
		If you set the frequency too high, they might not have finished changing...
		Maybe with more voltage they would!
	At some level, all electronics is analog

Instead of soldering these together, they can be made in a sheet
	A whole circuit can be made in a sheet
	It's smaller and faster that way

Next series:  Gates!  
	We'll look at an example or two, then move to computer parts