A system in which two or more programs are allotted, in turn, equal time or use of a computer or computer device.

A mode of data processing that allows many terminal users to utilize a computer's resources to perform a variety of tasks simultaneously.

Method of operation in which a computer facility is shared by several users for different purposes at (apparently) the same time. Although the computer actually services each user in sequence, the high speed of the computer makes it appear that the users are all handled simultaneously.