I recently suggested the following equation as a simple definition of the formation of Silicon Valley:

S + F+ WW = SiV

where

S is the Shockley "traitorous eight" semiconductor technologists,

F is Fairchild Camera and Instrument Corp. initial seed money for S in forming Fairchild Semiconductor in 1957,

WW is Walker's Wagon Wheel bar on Middlefield in Mountain View where semiconductor people met and business plans were formulated during the decade of the 60's, and

SiV is Silicon Valley as so known by 1970 thanks to Don C. Hoefler of Electronic News paper.