The Santa Clara county, south of the Bay Area, became known as Silicon Valley in the early 1950s after the sprouting of a myriad of semi-conductor companies. As a result, young Steve Jobs grew up in a neighborhood of engineers working on electronics and other gizmos in their garages on weekends. This shaped his interest in the field as he grew up. At age 13, he met one the most important persons in his life: 18-year-old Stephen Wozniak, an electronics wiz kid, and, like Steve, an incorrigible prankster.