What familiar device was invented by human-computer interface engineer Douglas Engelbart, creator of hypertext?
Douglas Engelbart Douglas Carl Engelbart (January 30, 1925 – July 2, 2013) was an American engineer and inventor, and an early computer and Internet pioneer. 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. These were demonstrated at The Mother of All Demos in 1968. Engelbart's Law, the observation that the intrinsic rate of human performance is exponential, is named after him.
Chip Morningstar Chip Morningstar is an author, developer, programmer and designer of software systems, mainly for online entertainment and communication. He graduated from University of Michigan in 1981 with a Bachelor of Science in Computer Engineering. While at the University of Michigan he also performed research in the Space Physics Research Laboratory, where he wrote device drivers and CAD software for electronic circuitry. Morningstar held many jobs throughout his career in the research and development of technology and programs. Most notably was Morningstar's role as project leader for Lucasfilm's "Habitat", the first large-scale virtual multiuser environment. In March 2001, Morningstar and colleague Randy Farmer were awarded the inaugural "First Penguin Award" by the International Game Developers Association for their work on Habitat. He also participated in Project Xanadu, for which the word hypertext was first coined. Additionally, he is credited with coining the term avatar for an on-screen representation and pre-Internet work in online information marketplaces.