The Greatest Invention from the Year You Were Born

1968: Integrated Computer Systems

In a landmark December 1968 demonstration, later known as The Mother of all Demos, engineer Douglas Engelbart illustrates the use of lots of recent technologies in conjunction with each other, including: on-screen windows, hypertext, graphics, file linking, revision control, video conferencing, the computer mouse, and word processing. Both Mac and Windows user interfaces will borrow heavily from the example set here.