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Multitasking (other)
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Multitasking may refer to: * Computer multitasking, the concurrent execution of multiple tasks (also known as processes) over a certain period of time ** Cooperative multitasking ** Pre-emptive multitasking * Human multitasking, the apparent performance by an individual of handling more than one task at the same time * Media multitasking, using TV, the Web, radio, telephone, print, or any other media in conjunction with another See also * Task scheduler * Task manager * * Taskmaster (other) * Task (other) Task may refer to: * Task (computing), in computing, a program execution context * Task (language instruction) refers to a certain type of activity used in language instruction * Task (project management), an activity that needs to be accomplished ... [...More Info...] [...Related Items...] OR: [Wikipedia] [Google] [Baidu] |
Computer Multitasking
In computing, multitasking is the concurrent execution of multiple tasks (also known as processes) over a certain period of time. New tasks can interrupt already started ones before they finish, instead of waiting for them to end. As a result, a computer executes segments of multiple tasks in an interleaved manner, while the tasks share common processing resources such as central processing units (CPUs) and main memory. Multitasking automatically interrupts the running program, saving its state (partial results, memory contents and computer register contents) and loading the saved state of another program and transferring control to it. This "context switch" may be initiated at fixed time intervals ( pre-emptive multitasking), or the running program may be coded to signal to the supervisory software when it can be interrupted ( cooperative multitasking). Multitasking does not require parallel execution of multiple tasks at exactly the same time; instead, it allows more than o ... [...More Info...] [...Related Items...] OR: [Wikipedia] [Google] [Baidu] |
Cooperative Multitasking
Cooperative multitasking, also known as non-preemptive multitasking, is a style of computer multitasking in which the operating system never initiates a context switch from a running process to another process. Instead, in order to run multiple applications concurrently, processes voluntarily yield control periodically or when idle or logically blocked. This type of multitasking is called ''cooperative'' because all programs must cooperate for the scheduling scheme to work. In this scheme, the process scheduler of an operating system is known as a cooperative scheduler whose role is limited to starting the processes and letting them return control back to it voluntarily. Usage Although it is rarely used as the primary scheduling mechanism in modern operating systems, it is widely used in memory-constrained embedded systems and also, in specific applications such as CICS or the JES2 subsystem. Cooperative multitasking was the primary scheduling scheme for 16-bit application ... [...More Info...] [...Related Items...] OR: [Wikipedia] [Google] [Baidu] |
Pre-emptive Multitasking
In computing, preemption is the act of temporarily interrupting an executing task, with the intention of resuming it at a later time. This interrupt is done by an external scheduler with no assistance or cooperation from the task. This preemptive scheduler usually runs in the most privileged protection ring, meaning that interruption and resuming are considered highly secure actions. Such a change in the currently executing task of a processor is known as context switching. User mode and kernel mode In any given system design, some operations performed by the system may not be preemptable. This usually applies to kernel functions and service interrupts which, if not permitted to run to completion, would tend to produce race conditions resulting in deadlock. Barring the scheduler from preempting tasks while they are processing kernel functions simplifies the kernel design at the expense of system responsiveness. The distinction between user mode and kernel mode, which ... [...More Info...] [...Related Items...] OR: [Wikipedia] [Google] [Baidu] |
Human Multitasking
Human multitasking is the concept that one can split their attention on more than one task or activity at the same time, such as speaking on the phone while driving a car. Multitasking can result in time wasted due to human context switching and becoming prone to errors due to insufficient attention. If one becomes proficient at two tasks, it is possible to rapidly shift attention between the tasks and perform the tasks well. Etymology The first published use of the word "multitask" appeared in an IBM paper describing the capabilities of the IBM System/360 in 1965. The term has since been applied to human tasks. Research Since the 1960s, psychologists have conducted experiments on the nature and limits of human multitasking. The simplest experimental design used to investigate human multitasking is the so-called psychological refractory period effect. Here, people are asked to make separate responses to each of two stimuli presented close together in time. An extremely genera ... [...More Info...] [...Related Items...] OR: [Wikipedia] [Google] [Baidu] |
Media Multitasking
Media multitasking is the concurrent use of multiple digital media streams. Media multitasking has been associated with depressive symptoms and social anxiety by a single study involving 318 participants. A 2018 review found that while the literature is sparse and inconclusive, people who do a heavy amount of media multitasking have poorer performance in several cognitive domains. One of the authors commented that while the data does not "unambiguously show that media multitasking causes a change in attention and memory," media multitasking is an inefficient practice that requires " task switching" costs. In many cases, media multitasking is made up of experiences that are not necessarily intended to be combined or coordinated. For example, a user may be browsing the Web, listening to music, playing video games, using e-mail, and/or talking on the phone while watching TV. More intentionally coordinated forms of media multitasking are emerging in the form of "co-active media" and ... [...More Info...] [...Related Items...] OR: [Wikipedia] [Google] [Baidu] |
Task Scheduler
Task Scheduler (formerly Scheduled Tasks) is a job scheduler in Microsoft Windows that launches computer programs or scripts at pre-defined times or after specified time intervals. Microsoft introduced this component in the Microsoft Plus! for Windows 95 as ''System Agent.'' Its core component is an eponymous Windows service. The Windows Task Scheduler infrastructure is the basis for the Windows PowerShell scheduled jobs feature introduced with PowerShell v3. Task Scheduler can be compared to cron or anacron on Unix-like operating systems. This service should not be confused with the scheduler, which is a core component of the OS kernel that allocates CPU resources to processes already running. Versions Task Scheduler 1.0 Task Scheduler 1.0 is included with Windows NT 4.0 (with Internet Explorer 4.0 or later), Windows 2000, Windows XP and Windows Server 2003. It runs as a Windows Service, and the task definitions and schedules are stored in binary .job files. Tasks ar ... [...More Info...] [...Related Items...] OR: [Wikipedia] [Google] [Baidu] |
Task Manager
In operating systems, a task manager is a system monitor program used to provide information about the processes and applications running on a computer, as well as the general status of the computer. Some implementations can also be used to terminate processes and applications, as well as change the processes' scheduling priority. In some environments, users can access a task manager with the Control-Alt-Delete keyboard shortcut. Task managers can display running services (processes) as well as those that were stopped. They can display information about the services, including their process identifier In computing, the process identifier (a.k.a. process ID or PID) is a number used by most operating system kernels—such as those of Unix, macOS and Windows—to uniquely identify an active process. This number may be used as a parameter in vario ... and group identifier. Common task managers * Activity Monitor, included in macOS * Conky, for the X Window System * hto ... [...More Info...] [...Related Items...] OR: [Wikipedia] [Google] [Baidu] |
Taskmaster (other)
A taskmaster is a supervisor who imposes hard or burdensome work. Taskmaster may also refer to: * ''Taskmaster'' (TV series), a British comedy panel show ** ''Taskmaster'' (American TV series), an American version of the British show ** '' Taskmaster Australia'', an Australian version of the British show ** , a Finnish version of the British show ** '' Taskmaster New Zealand'', a New Zealand version of the British show ** , a Norwegian version of the British show ** , a Swedish version of the British show * Taskmaster (character), a Marvel Comics supervillain * "Taskmaster", song by the grindcore band Pig Destroyer from the album '' Painter of Dead Girls'' * "Taskmaster", song by Hullabaloo from the album ''Beat Until Stiff ''Beat Until Stiff'' is the second release, and first full-length album, by Hullabaloo. It was released in 1989 on Toxic Shock. For ''Beat Until Stiff'', TQ had taken over as full-time lead singer for the band (though Sluggo sings on the tune "T ...'' * ... [...More Info...] [...Related Items...] OR: [Wikipedia] [Google] [Baidu] |
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