Memory!
	Make a nor gate latch
	Let's take this one down to transistors too
	Can also use nand gates

Now that we have memory:  A register
	A bunch of latches
	Let's design a register circuit, like we did with an adder last time

The beginnings of a processor:
	3 registers:  Two input, and an output
	2 operations:  Addition and something else
	2 opcodes

Multiplexer review:
	I thought this one was unusually clear:
	https://www.geeksforgeeks.org/difference-between-multiplexer-and-demultiplexer/

Alright:  A bus
	Receiving end:
		Connect a line with a bit, by index
		For now:  Change bits one at a time
		Change all, then strobe?
	Sending end:
		We need a clock signal for this one!

Let's talk about clocks:
	Strobe
	Rising and falling edge
	Can we make a delay circuit?
	How about an iterator?
	
Back to busses:
	Can we come up with a sending end?
	Suppose it reads from a register