memory procs.

draw a normal diagram with not gates only

label the points at the start and end of each line segment with

	a number
	

1. set all line-end numbers to high

2. where a line-start number is low, set the line-end number of
	that line to low

3. determine the output of each gate as the opposite of the input

4. repeat

store this data in memory/a memory chip

control chip requires a counter, if, looking up an address from data item.


