A History of Silicon Valley

This biography is an appendix to my book "A History of Silicon Valley"


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(Copyright © 2009 Piero Scaruffi)

Leonard Bosack

Leonard Bosack (Pennsylvania, 1952) studied at La Salle College High School until 1969 and the Wharton School at the University of Pennsylvania until 1973. He joined DEC as a hardware engineer. In 1979 he went to study computer science at Stanford University. In 1981 Stanford had a team working on a project to connect all their mainframes, minis, LISP machines and Altos. William Yeager designed the software (on a PDP-11) and ubiquitous student Andy Bechtolsheim designed the hardware. Leonard Bosack was a support engineer who worked on the network router that allowed the computer network under his management (at the Computer Science lab) to share data with another network (at the Business School). In 1984 he and his wife Sandy Lerner (manager of the other lab) started Cisco in Menlo Park to commercialize the Advanced Gateway Server, which was a revised version of the Stanford router built by William Yeager and Andy Bechtolsheim. The product was developed in their garage and first sold in 1986 through word of mouth. The company became one of Silicon Valley's biggest success stories. However, in 1990 Cisco's management fired Lerner and Bosack resigned.
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