American computer scientist who created the CP/M operating system which had preemptive multitasking with windows capabilities and menu-driven user interfaces. He is also founded Digital Research, Inc. (DRI) and was the first to see microprocessors as fully capable computers rather than equipment controllers. Kendall is credited to have created the first programming language and first compiler specifically for microprocessors.
The computer's "Copy-n-paste" feature was first implemented in the Gypsy word processor developed at Xerox Palo Alto Research Center in 1970s. [more...]