Silicon Valley
Silicon Valley is the nickname for the technology region centered on the Santa Clara Valley in northern California, running roughly from Palo Alto and Stanford south through Mountain View, Sunnyvale, Santa Clara, and Cupertino to San Jose. The name comes from silicon, the semiconductor at the heart of the integrated circuit, because the region's industry began with transistors and chips, even though today it is as much about software, internet services, and venture investing as about physical silicon.
The region's electronics roots predate the transistor and run through Stanford University. Frederick Terman, an engineering professor who later became dean and provost at Stanford, encouraged students to start companies locally instead of leaving for the East Coast, and the university leased land for the Stanford Industrial Park beginning in the early 1950s so that technology firms could set up next to the campus. Hewlett-Packard, founded in 1939 by two of his former students, is the classic example of what that approach produced. By the 1950s a base of electronics firms, defense contracts, and trained engineers was already in place.
The semiconductor story starts in 1956, when William Shockley moved west to start Shockley Semiconductor Laboratory in Mountain View. Shockley had co-invented the transistor at Bell Labs and shared the 1956 Nobel Prize in Physics, and he recruited an exceptionally talented young team. His management style, however, drove eight of them to leave in 1957: Julius Blank, Victor Grinich, Jean Hoerni, Eugene Kleiner, Jay Last, Gordon Moore, Robert Noyce, and Sheldon Roberts. They founded Fairchild Semiconductor with backing from Fairchild Camera and Instrument, and are known as the Traitorous Eight. Fairchild developed the planar process and the first practical monolithic integrated circuit, and its alumni, nicknamed the Fairchildren, went on to start or lead dozens of companies, including Intel in 1968, co-founded by Noyce and Moore, and Advanced Micro Devices in 1969.
The name itself dates to January 1971, when journalist Don Hoefler published a series titled Silicon Valley USA in the trade newspaper Electronics News. Hoefler, who covered the semiconductor business, used the phrase to describe the cluster of chip companies in Santa Clara County, and it stuck because it was both accurate and catchy. The name was coined about a decade and a half after the Shockley laboratory opened, which shows how it works: the region existed first, and then a journalist gave it a label that the rest of the world adopted.
What kept the cluster growing was a self-reinforcing mix of talent, capital, and mobility. Engineers who left one company took their know-how to start another, a pattern helped by California's long-standing refusal to enforce most employee non-compete agreements, and investors learned to finance such founders. Venture capital firms such as Kleiner Perkins and Sequoia Capital, both founded in 1972, concentrated along Sand Hill Road in Menlo Park, and Eugene Kleiner of the Traitorous Eight was among the founders of the first. The result was a region where a start-up could raise money, hire experienced staff, and find suppliers within a short drive, and where the failure of one firm often seeded several others.
Today the region's tech giants span chips, computers, phones, social platforms, and cloud services, and its costs are as notable as its output. Apple, Google, Meta, Nvidia, Intel, and many others have their headquarters in or near the valley, and AI companies and chip designers continue to cluster there. The price of this concentration is some of the highest housing costs and salaries in the world, long commutes, and a heavy dependence on a small number of industries, which have driven growth of other tech hubs in Austin, Seattle, Boston, and abroad.
A few misconceptions are worth correcting. Silicon Valley is not an official place with fixed borders; it is a loose region whose boundaries are defined by industry rather than by law. And although the name evokes silicon chips, most of the world's advanced chips are no longer manufactured in the valley: companies there often design chips, while the fabrication plants are mostly in Taiwan, South Korea, and elsewhere, and the region's biggest economic engines are now software and services. A third pitfall is treating the valley's rise as the work of a few lone geniuses; it depended on university policy, military and government funding, immigrants and engineers from around the world, and a business culture that tolerated failure.
Read Silicon Valley as a business ecosystem that grew out of a transistor: a Stanford-fed talent pool, a failed management relationship at Shockley's laboratory, and a chain of spin-off companies turned a fruit-orchard valley into the place whose name now stands for the entire technology industry, long after silicon stopped being the main thing it sells.