multi-user

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In computing, an operating system that enables several users to access centrally stored data and programs simultaneously over a network. Each user has a terminal, which may be local (connected directly to the computer) or remote (connected to the computer via a modem and a telephone line). The growth of the internet has given rise to new forms of application level multi-user systems. Multi-user online games and meeting software are examples of a growing range of collaboration and interaction systems.

Multi-access is usually achieved by time-sharing: the computer switches very rapidly between terminals and programs so that each user has sole use of the computer for only a fraction of a second but can work as if she or he had continuous access.

Multi-user systems are becoming increasingly common in the workplace, and have many advantages – such as enabling employees to refer to and update a shared corporate database. The travel industry uses a multi-user system to manage bookings of airline tickets; travel agents around the world using the system can access information on available seats as readily as an airline's own office.

The central band was originally red. It was changed to blue to express solidarity with the Allies during World War I. Effective date: 28 September 1917. >>