The demonstration
On December 9, 1968, in the Civic Auditorium in San Francisco, Douglas Engelbart stood before an audience of computer professionals attending the Fall Joint Computer Conference and showed a system his team had built at the Stanford Research Institute. For roughly an hour and a half, he sat at a console on stage, working with a screen projected on a large display behind him. His team was linked from their laboratory in Menlo Park, about thirty miles away, by communication lines.
Later generations named the event the “Mother of All Demos”, a label added afterward. It was not a product launch. It was a research presentation of what the group called the oNLine System, or NLS, and the ideas behind it.
The research goals
Engelbart had set out a vision in the early 1960s of “augmenting human intellect”: using computers to help people solve complex problems, not just to run calculations. His team, called the Augmentation Research Center, worked on tools for editing text, organizing ideas and collaborating. The mouse was one piece, built to let a user point quickly at items on a screen.
The group had funding from several government sources, including ARPA, NASA and the Air Force. They used the system themselves daily, which meant that they improved it based on their own experience. This habit of using one’s own tool is considered an important reason the system was coherent.
What the audience saw
During the demo, Engelbart used a keyboard, a mouse and a five-key chord keyset, a device on which combinations of keys produce letters. The mouse moved a pointer on screen, and he used it to select text and commands. Features that appeared on screen included editing and rearranging text, links between documents, outlines that expanded and collapsed, and a view that showed the structure of information.
The presentation also included video of Engelbart’s face shown on the screen alongside his work, and a collaborative session with a colleague at a remote location, who shared the same display. Taken together, these hinted at word processing, hypertext, video conferencing and shared editing, all years before they became everyday tools. The presentation is easy to overstate, however, since it was a custom research system running on expensive equipment, and not a design ready for the public.
The team
William English, the engineer who built early mice and helped run the demonstration, directed much of the technical staging, including the video and communications links. Other members of the lab developed software and hardware. Credit for the mouse itself is usually given to Engelbart and English, and the idea owes something to earlier pointing and tracking devices.
How the audience reacted
Accounts describe applause, and some in the audience were deeply impressed. The demonstration also drew skepticism, as the system was complex, and many in the field did not see how it could be made cheap enough for ordinary users. Some of those present were younger researchers who later went on to work at Xerox PARC and elsewhere, and the influence of the demo on them is often cited. Exactly how large that influence was is hard to measure.
From demo to desktop
After the demonstration, interest in the lab grew, but funding and internal changes made the following years difficult. In the early 1970s, several of its engineers, including English, moved to Xerox PARC. There the mouse was used with the Alto, an experimental computer, and with graphical software that took ideas about windows and icons much further. Xerox released the Star in 1981, and Apple used a mouse with the Lisa and Macintosh, which reached much larger audiences. Eventually the mouse became an item that came with nearly every desktop machine.
The lab also took part in early networking: SRI became the second site on the ARPANET in 1969, and Engelbart’s group helped run an information center for the network’s users.
Recognition
Engelbart received many honors late in life, including the National Medal of Technology in 2000 and the Turing Award in 1997. He died in 2013. He often said that the mouse was only a small part of his larger goal of helping people work together to solve problems, and that his interests were closer to how groups could improve their collective thinking than to hardware.
What the story shows
The 1968 demonstration is a landmark in the history of interactive computing, and the mouse was one visible part. It is worth remembering that the device was built earlier, around the mid-1960s, and the public showing was the moment when many people first saw it working. The larger lesson is that the mouse made sense as part of a system, not alone. A pointing device is only useful when software gives people something to point at.