Who is Josh Rosen from The Soul of a New Machine and what is their importance?

Josh Rosen grew up in Chicago. He received a masters in electrical engineering from Northwestern and worked for Fermi Labs and Fairchild Space and Electronics before joining Data General. Rosen is the designer of the ALU board in the Eclipse. He came to the Eclipse Group from the Special Systems Group where he was the star. He was not very happy at the Eclipse Group, because he worked in Holberger's shadow and received a less than stellar review.