Intel was founded in 1968 by Gordon E. Moore (a chemist and physicist) and Robert Noyce (a physicist and co-inventor of the integrated circuit) when they left Fairchild Semiconductor. A number of other Fairchild employees also went on to participate in other Silicon Valley companies. Intel's third employee was Andy Grove, a chemical engineer, who ran the company through much of the 1980s and the high-growth 1990s. Grove is now remembered as the company's key business and strategic leader. By the end of the 1990s, Intel was one of the largest and most successful businesses in the world.