Perhaps a little TOO harsh. There are 35 articles in the book. Only 9 use SSM or CEM chips. Of those, 4 use CEM3330 or CEM3320 which are still available (especially the 3320!!) 5 out of 35 is a good ratio to me! There are a couple of SAD-1024 BBD articles, but you can use the MN3xxx series BBDs from Panasonic (from www.digikey.com). Paul Schreiber