PETER MENZEL / SCIENCE PHOTO LIBRARY PETER MENZEL / SCIENCE PHOTO LIBRARY
Mark Weiser, Principal Scientist at US computer science laboratory Xerox PARC (Palo Alto Research Center). In front of him is a ParcTab, a hand-held prototype that allows the user to beam information to a computer by writing shorthand-like symbols on a pressure-sensitive screen. Behind him are two "liveboards" (left and over his head) - wall-sized interactive screens. Weiser's quote appears on one of them. One of Silicon Valley's most innovative computer science companies, Xerox PARC is the birthplace of the computer workstation, the mouse and the "graphical user interface" - the now universal system of interacting with computers through windows and icons. Photographed in 1995.
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