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|CED in the History of Media Technology|
In what has come to be known as the mother of all demos Douglas Engelbart demonstrated the first computer mouse at the Fall Joint Computer Expo in San Francisco on December 9, 1968. Engelbart also demoed the chord keyset (on left) that was a keyboard used with five piano-like keys. Englebert worked at the Stanford Research Institute which was also perfecting the acoustic modem at this time. Other technologies demonstrated during the landmark 90 minute session included hypertext, object addressing, dynamic file linking, and shared-screen collaboration in which two persons at different sites communicated over a network via both audio and video.