EE settled on after much pondering. [WOT] a close contender HAKMEM 1972 MIT notes from misc people aimed at helping code / hardware / algorithm / idea / brainpower re-use. Some gems and some stuff which now looks very dated. As it is. http://home.pipeline.com/~hbaker1/hakmem/hakmem.html Code in PDP-6/10 language unless other wise stated. [After all, what else would you use?] Numbers in octal unless otherwise stated [After all, what else ... ? ] Problems with answers are excercies. Problems with no answers are problems - please send solutions when known (maybe now a bit past use-by date). These guys sound familiar. Others may too: Marvin Minsky [minsky@ai.mit.edu] Richard Stallman [rms@ai.mit.edu] http://xkcd.com/225/ Which led to Stallman receiving a Katana http://blog.xkcd.com/2007/04/19/life-imitates-xkcd-part-ii-richard-stallman= / --=20 http://www.piclist.com/techref/piclist PIC/SX FAQ & list archive View/change your membership options at http://mailman.mit.edu/mailman/listinfo/piclist .