Final answer:
In Douglas Engelbart's 1968 "Mother of all Demos," he demonstrated three key technologies: the computer mouse, hypertext, and real-time video conferencing, which have vastly influenced modern computing interfaces and global connectivity.
Step-by-step explanation:
The 1968 demonstration by Douglas Engelbart, famously known as the "Mother of all Demos," showcased several groundbreaking technologies that have since become foundational in the field of computing. Three of the technologies demonstrated during this event include:
- The Computer Mouse: Englebart introduced the first computer mouse, a pointing device that allowed users to interact with graphical elements on a computer screen, which revolutionized the way we interact with computers.
- Hypertext: Engelbart also demonstrated the concept of hypertext, allowing users to click on links to navigate between different documents, which is a fundamental aspect of today's World Wide Web.
- Real-Time Video Conferencing: The demo featured the ability to share screens and engage in real-time video communication, foreshadowing today’s virtual meeting and collaboration technologies.
These technologies, along with the concept of windows and dynamic file linking, formed the basis of much of our modern user interface design and the global connectivity we experience today.