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Dennis R. Cohen has been developing software since his days with the Jet Propulsion Lab’s Deep Space Network in the 1970s and has been writing and editing technology books and magazine articles since the late 1970s. He’s author, coauthor, or contributing author of more than 30 books and the editor of more than 300 technology titles. He has also taught mathematics, helped run a restaurant, and was a dealer in the 1972 World Series of Poker.