On December 9, 1968, Douglas Engelbart and 17 other researchers from the Stanford Research Institute gave a 90-minute demo of groundbreaking technologies that provided a startlingly accurate glimpse of a future that was still decades away. One of those technologies was a computer interface navigated with a mouse: a device Engelbart had invented and patented. Now one of his original three-button mice is going up for auction. Advertisement The presentation, given at the Fall Joint Computer Conference in San Francisco that year, has since become known as the “mother of all demos” and showcased technologies that Engelbart and a team of researchers at the Stanford Research Institute’s Augmented Research Center had been developing since 1962. The demo included such groundbreaking concepts as word processing with real-time editing, hyperlinks that would one day power the world wide web, video conferencing, screen sharing, and a windowed software interface that could be navigated with a pointing device that controlled an on-screen cursor invented by Engelbart and his colleague, Bill English.