Roland Piquepaille writes "BusinessWeek celebrates its anniversary with a series of articles about the great thinkers and innovators from the past 75 years. The series stars with a profile of Alan Turing, "Thinking Up Computers." In case you forgot, Turing is the man who created the concept of a "universal machine" which would perform various and diverse actions when given various sets of instructions. In other words, he laid out in the 1920s the foundations of software. You'll find the introduction of Turing's profile, plus more details, photographs and references in this overview."