What it is:
Silicon Valley is the area around San Jose and San Francisco, California that is home to a number of well-known internet, software, and computer companies.
How it works (Example):
Named for silicon, the element from which computer chips are produced, Silicon Valley is located in the area south of San Francisco and is known for its high-tech computer industry. Many well-known computer and software manufacturers, as well as a internet companies and start-ups, are located in Silicon Valley, including Apple, Google, Yahoo, Hewlett-Packard, Intel, and Adobe.
Why it Matters:
Silicon Valley has been and continues to be the source of most of the computer and software innovations that have transformed society and business. For this reason, its name has become synonymous with cutting-edge computer and internet innovations.