ABSTRACT
There were three developments that dramatically changed communication by the end of the 20th century: personal computers, digitized data, and the Internet. As electronics became ubiquitous in the second half of the 20th century, the way that information was recorded and stored was changed from analog to digital. Then came the Internet, which connected computers with each other no matter where they were in the world, and allowed users to send messages and content to each other. In 1968 Robert Noyce’s Fairchild Semiconductor company developed the first microprocessor chip, a single chip that performed all the central operations of a computer, also called a central processing unit. The two key features of the Graphical User Interface are first, a visual display with windows and icons representing folders and documents, and second, an input device such as a mouse that moves a cursor across the display and opens or launches documents and applications by clicking on them.
