The Cambridge University mathematician laid the foundation for the invention of software. As part of its anniversary celebration, BusinessWeek is presenting a series of weekly profiles for the greatest innovators of the past 75 years. Some made their mark in science or technology; others in management, finance, marketing, or government. In late September, 2004, BusinessWeek
will publish a special commemorative issue on Innovation. Elsewhere, there is also a
special article for Turing.