Question: Douglas Engelbart, presenter of the 'Mother of All demos' computer demonstration at the Association of Computing Machinery is best known for facilitating the development of which computer device in a precursor to graphical user interfaces?
Sentence (from "The Mother of All Demos"): "The Mother of All Demos" is a name retroactively applied to a landmark computer demonstration, given at the Association for Computing Machinery / Institute of Electrical and Electronics Engineers (ACM/IEEE)—Computer Society's Fall Joint Computer Conference in San Francisco, which was presented by Douglas Engelbart on 9  1968 ( ) (1968--) .
Relevant evidence: Yes