[PAR] [TLE] Douglas Engelbart [SEP] 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. [PAR] [TLE] Purple Numbers [SEP] Purple Numbers is a suite of tools that allows one to address paragraphs of HTML content.  It was originally conceived by Douglas Engelbart for his creation of hypertext.  The name comes from the faint, purple numbers at the end of each paragraph, which represent the link to that paragraph.  The name was coined by Christina Engelbart, Doug's daughter.
[PAR] [TLE] Douglas Engelbart [ SEP ] 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 . [PAR] [TLE] Purple Numbers [ SEP ] Purple Numbers is a suite of tools that allows one to address paragraphs of HTML content . It was originally conceived by Douglas Engelbart for his creation of hypertext . The name comes from the faint , purple numbers at the end of each paragraph , which represent the link to that paragraph . The name was coined by Christina Engelbart , Doug 's daughter .
What computer accessory was the result of the work on human-computer interaction by the creator of hypertext?
What computer accessory was the result of the work on human - computer interaction by the creator of hypertext ?
mouse
mouse