Douglas Engelbart, whose invention of the mouse transformed the way people interact with computers, has died. Engelbart died Tuesday night at his home in Atherton, California, SRI International -- the research institute where he once worked -- said in a statement. He was 88. "Doug's legacy is immense — anyone in the world who uses a mouse or enjoys the productive benefits of a personal computer is indebted to him," Curtis R. Carlson, SRI's president and CEO, said in a written statement. Decades ago, Engelbart came up with the idea we now know as a mouse. His first prototype, which...