Show and tell
	
Let's take a look through the BIOS on one of these machines

Gates:
	buffer
		input impedance
	not (inverter)
	and
	or
	nand (universal)
	nor (universal)
	xor
	xnor

Translating between logic statements and gates
	Translate modus ponens into gates
	Logic diagrams, simplification and optimization
		That's more computer engineering
		Weird note:  Teaching strand
	Do we really want to minimize transistor count?
		Yes, but not at any cost
		Switching delay, and path depth
	
MOSFET (Metal Oxide Field-Effect Transistor):
	Usually the type of transistor in digital logic circuits
	Also used for amplifiers, and a few other things

NMOS, CMOS, PMOS:
	Why does the inverter have 5 circuit diagrams?
	It can be made a few different ways
	The diagrams do present a historical progression
		I've been sticking with the 60's
	CMOS has taken over for processors and such
		Physical layout diagram of a gate using CMOS

Back to gates:
	How do we build everything from nand and nor?
		Surely we can figure it out!

Bigger parts:
	Multiplexer
	Demultiplexer
	Adder (and carry)
		Path depth here, especially with ripple carry

How many transistors in a CPU, anyway?
	History on Wikipedia