Why Xerox are important?

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.