Web Links for Chapter 12
Page 573, Sequential Circuits and Finite-State Machines
For general information, see http://whatis.techtarget.com/definition/0,,sid9_gci214244,00.html.
Page 579, Finite-State Automata
A finite-state automaton simulator is available at http://www.belgarath.org/java/fsme.html.
Page 587, Backus Naur Form
General information is at http://cui.unige.ch/db-research/Enseignement/analyseinfo/AboutBNF.html. For some history of BNF, see http://www2.andrews.edu/~bidwell/456/history.html.
Page 590, Lindenmayer Grammar
See http://www.fact-index.com/l/l_/l_system_1.html.
Page 591, von Koch Snowflake
A biography of von Koch is at http://www-groups.dcs.st-and.ac.uk/~history/Mathematicians/Koch.html.