Computer users of all ages have Douglas Engelbart to thank for helping them navigate their desktop, as he's the man who invented the computer mouse. Sadly, Mr. Engelbart passed away late on July 2 at his home in Atherton, California, at the age of 88. He not only gave the world the computer mouse but also helped develop hypertext, networking, and even the beginnings of graphical user interfaces. Back in 1992 he received the Electronic Frontier Foundation's Pioneer Award, and a representative from the EFF, speaking of Mr. Engelbart's passing, said, "it's impossible to express his impact as a computing pioneer."
On December 8, 1968, Mr. Engelbart gave a presentation now known as "The Mother of All Demos," where he showed off not only the computer mouse, but video conferencing, teleconferencing, hypertext, word processing, hypermedia, object addressing, dynamic file linking, and a collaborative real-time editor. You can watch a video of it below, just be warned it's about an hour and 40 minutes long. It's fascinating stuff however, and does show how forward thinking his ideas truly were. The world of computers lost a pioneer, but he leaves it as a far better place than anyone could have imagined.
Source: Ars Technica