Zero Defects Inc., Santa Clara, N. California

Moving further north in California to the San Mateo Peninsula we arrive at California's premier high technology industrial zone familiarly and universally known as Silicon Valley. The area comprises a chain of communities in the Santa Clara Valley south of San Francisco, including Santa Clara, San Jose, Mountain View, Sunnyvale, Cupertino, Los Altos, Palo Alto, Menlo Park, Redwood City and San Carlos. In excess of 1,500 companies are based here, constituting about one fifth of US high‐tech industry and population has increased from 290,000 in 1950 to its present 1·3 million or more.