COMPUTER FUNDAMENTALS

Detailed explanation-1: -Douglas Engelbart, (born January 30, 1925, Portland, Oregon, U.S.-died July 2, 2013, Atherton, California), American inventor whose work beginning in the 1950s led to his patent for the computer mouse, the development of the basic graphical user interface (GUI), and groupware.

Detailed explanation-2: -(The cursor was also called the CAT.) An obituary on July 4 about Douglas C. Engelbart, a visionary scientist who invented the computer mouse, misstated his date of birth.