Computer pioneer Douglas Engelbart, who is credited with the invention of the computer mouse and graphical user interface, has died at his home in Atherton, California Tuesday night at the age of 88.

Engelbart, who had worked as a radar technician during World War II, was an early computer visionary who dreamed of using technology to improve communications among people. He received awards such as: the National Medal of Technology in 2000, the Lemelson-MIT Prize in 1997 and also the Turing Award in 1997.

He unveiled the prototype of the now standard computer mouse in a December 1968 demonstration in San Francisco. At the same demo, Englebart also initiated the first ever video conference with a colleague some 50kms away and also laid the basis for the internet by describing how information could be tied using text-based laws.

SRI licensed Englebart’s mouse design for 40,000 dollars and later released the first commercial mouse with Apple’s Lisa computer in 1983.