I didn’t recognize Engelbart by name when my friend, Dan, sent me a link to Doug Engelbart 1968 Demo, but I’d definitely heard about Xerox PARC developing the mouse in the 1960s:
On December 9, 1968, Douglas C. Engelbart and the group of 17 researchers working with him in the Augmentation Research Center at Stanford Research Institute in Menlo Park, CA, presented a 90-minute live public demonstration of the online system, NLS, they had been working on since 1962. The public presentation was a session in the of the Fall Joint Computer Conference held at the Convention Center in San Francisco, and it was attended by about 1,000 computer professionals. This was the public debut of the computer mouse. But the mouse was only one of many innovations demonstrated that day, including hypertext, object addressing and dynamic file linking, as well as shared-screen collaboration involving two persons at different sites communicating over a network with audio and video interface.
The video footage has such a 1960s-future feel to it — and a bit of a 1940s propaganda-film feel too. Oh, and the best part — the computer makes all those great sci-fi computer sounds! Check it out.