Xerox Alto The Xerox Alto is the first computer designed from its inception to support an operating system based on a graphical user interface (GUI), later using the desktop metaphor . The first machines were introduced on 1 March 1973, a decade before mass market GUI machines arose.
In computer networking, AP is an abbreviation for access point. An access point, or wireless access point, is a device that permits mobile devices, such as laptop computers and personal digital assistants, to connect wirelessly to a wired computer network. AP isolation is a technique for preventing mobile devices connected to an AP from communicating directly with each other.