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.
Data Toolbar Data Toolbar is a Web scraping computer software add-on to the Internet Explorer, Mozilla Firefox, and Google Chrome Web browsers that collects and converts structured data from Web pages into a tabular format that can be loaded into a spreadsheet or database management program.