Engelbart was a World War II veteran, where he served overseas as a radar technician. Over the years he dreamed of and created the first mouse, which included a revolutionary change in how user interfaces worked. He patented the X-Y position system in 1970, which essentially is what is still used today to graphically display the movement of the mouse on the screen.
Engelbart was well respected in the early days of the industry when true “research” was conducted, backed largely by government money (NASA, Defense, etc). His concepts, like the mouse, were incorporated by men like Steve Jobs in his creation of the first mouse driven Operating System – the Apple Macintosh in 1984.
From this first mouse, invented decades ago, Engelbart lead us, humanity, away from just a keyboard with a black screen/green text connected to a mainframe. He could see the value of us each having a computer that we could comfortably use, as well as interact with others over a network.
Thank You, Douglas Engelbart. Rest In Peace.