Charles Patrick "Chuck" Thacker (February 26, 1943 – June 12, 2017) was an American pioneer computer designer. He designed the Xerox Alto, which is the first computer that used a mouse-driven graphical user interface (GUI).
Thacker was born in Pasadena, California on February 26, 1943. His father was Ralph Scott Thacker, born 1906, an electrical engineer (Caltech class of 1928) in the aeronautical industry, and with a previous marriage. His mother was the former (Mattie) Fern Cheek, born 1922 in Oklahoma, a cashier and secretary, who soon raised their two sons on her own.
Thacker worked in the 1970s and 1980s at the PARC, where he served as project leader of the Xerox Alto personal computer system, was co-inventor of the EthernetLAN, and contributed to many other projects, including the first laser printer.
After returning to the United States, Thacker designed the hardware for Microsoft's Tablet PC, based on his experience with the "interim Dynabook" at PARC, and later the Lectrice, a pen-based hand-held computer at DEC SRC.
In 2007, he was inducted as a Fellow of the Computer History Museum for "leading development of the Xerox PARC Alto, and for innovations in networked personal computer systems and laser printing technologies."
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