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?
Douglas Engelbart:  He is best known for his work on founding the field of human–computer interaction, particularly while at his Augmentation Research Center Lab in SRI International, which resulted in creation of the computer mouse, and the development of hypertext, networked computers, and precursors to graphical user interfaces. Douglas Engelbart:  These were demonstrated at The Mother of All Demos in 1968.
i don't know