The Xerox Palo Alto Research Center, universally known as Xerox PARC, was a corporate research laboratory established by the Xerox Corporation in 1970 in Palo Alto, California. Conceived to help Xerox build “the office of the future,” it assembled an extraordinary group of computer scientists and engineers and, within a single decade, produced a remarkable share of the ideas that define modern personal computing.
PARC’s Computer Science Laboratory, populated by figures such as Butler Lampson, Charles Thacker, Alan Kay, and Robert Metcalfe, pursued the radical premise that computing power should belong to individuals rather than to shared mainframes. From that premise came the Alto, an early personal computer with a bitmapped display and a mouse; the graphical user interface with overlapping windows, icons, and pointing; the Smalltalk programming language and environment; and the laser printer, which became one of Xerox’s most commercially successful products.
Connecting those personal computers required a network, and that need produced Ethernet. Working in the same laboratory, Robert Metcalfe and David Boggs invented Ethernet in 1973 to link the Altos within a building, publishing the design in their 1976 paper and securing US Patent 4,063,220, “Multipoint Data Communication System With Collision Detection,” which was assigned to Xerox and names PARC researchers Metcalfe, Boggs, Thacker, and Lampson as inventors. The patent is a direct primary record of PARC’s role as the birthplace of the local-area network.
PARC is also a cautionary tale in technology business history. Xerox, a copier company, struggled to commercialize many of the breakthroughs its researchers produced. The most famous episode came when Apple engineers visited PARC and drew inspiration from its graphical interface for the Lisa and Macintosh, while Xerox itself largely failed to capitalize on the technology. Ethernet was a notable exception: Metcalfe left to found 3Com and, with Xerox’s cooperation in the DEC-Intel-Xerox standardization effort, helped turn it into an open industry standard.
The Computer History Museum has preserved firsthand oral histories from PARC veterans, including Metcalfe’s multi-part interview recorded in 2006 and 2007, which document the lab’s culture and the origins of its inventions in the participants’ own words. Together with the patents and papers it generated, that record establishes Xerox PARC as one of the most influential research institutions in the history of computing, a place whose ideas, from the GUI to Ethernet, still shape how people use computers and networks every day.