Mon Dec 24 10:45:24 PST 2018 Kevin Karplus

This directory has programs for choosing component values for the
Impedance Token board.

    RClib.py	has a library of functions for representing the
		impedance tokens

    RC-choices.py chooses R and C values from hardwired lists
    		and selects R+C or R||C configurations that meet
		constraints on RC time constant and on impedance
    		values at selected frequencies.
		
		It also ensures that no component is used too
		frequently in the list.
		
		The list is in random order, and may be different on
		each run (as the limitations on the use of each
		component kicks in).

    RC-plot.py	A series of plots is produced from the list of tokens
	    (as output by RC-choices.py), created as a multipage PDF file
	    token_plots.pdf.

Mon Dec 24 10:50:56 PST 2018 Kevin Karplus

Still to do:
	Write a program using scipy.optimize.curve_fit to plot and fit
	models to data collected from measuring impedance tokens
	
	Document the programs internally!

	Write a program to