The Xerox Palo Alto Research Center, or Xerox PARC, is the lab where many of the seminal computer and networking technologies were developed over the last 30 years.
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The Xerox Corporation developed and brought to market the first xerographic (plain paper) copier. This revolutionized the business office environment. The Xerox Corporation also invented the Ethernet computer networking system and the graphical user interface, and was the first to successfully apply the computer mouse on a large scale. Many other critical elements of personal computers and computer networking were first created at the Xerox Palo Alto Research Center, although largely ignored by Xerox Corporation and brought to market by other companies.
The Graphic User Interface (GUI), the computer mouse and the Ethernet are among the items developed at Xerox PARC. They are now part of most operating systems.
The first developed portable computer was the Xerox NoteTaker, developed at Xerox PARC (Palo Alto Research Center), in 1976. The first mass-produced portable computer was the Osborne 1, in 1981.
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Xerox Corporation developed its own software for the DocuTech family of machines.
There is no single computer program called "Xerox." The Xerox Corporation offers a number of different programs to support the use of some of the printers that they market, and for other functions.
Xerox, primarily through its Palo Alto Research Center, developed the Ethernet, the graphical user interface, and integrated it with the mouse and other pointing devices. The company also developed the laser printer, widely connected ot computers are high speed output devices.
"Xerox Star" was the code name for a computer of the type that we might now call a PC, but the Star was designed to work through the Ethernet network with other machines and servers. This was one of the machines on which the graphical user interface was further developed by Xerox both before and after Apple began using that process.