stayed on at UC Berkeley as an assistant professor (1967-1970) and associate professor (1970-1971) of computer science. For a period of time, he concurrently served as director of system development for the Berkeley Computer Corporation (1969-1971).

In 1971, Lampson became one of the founding members of Xerox PARC, where he worked in the Computer Science Laboratory (CSL) as a principal scientist (1971-1975) and senior research fellow (1975-1983). His now-famous vision of a personal computer