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Devices for communication between computers, such as modems and network cards, typically perform both input and output operations. Any interaction with the system by an interactor is an input and the reaction the system responds is called the output. The designation of a device as either input or output depends on perspective.
Device drivers are software specific to each input/output (I/O) device that enables the operating system to work without modification over different hardware. [102] [103] Another component of file systems is a dictionary that maps a file's name and metadata to the data block where its contents are stored. [104]
The operating system is responsible for translating these channel programs before executing them, and for this particular purpose the Input/Output Supervisor (IOS) has a special fast fix function which was designed into the OS Supervisor just for those "fixes" which are of relatively short duration (i.e., significantly shorter than "wall-clock ...
A common computer input device, a keyboard. A user presses a key which transfers information to a computer. In computing, an input device is a piece of equipment used to provide data and control signals to an information processing system, such as a computer or information appliance.
Input/output (I/O) scheduling is the method that computer operating systems use to decide in which order I/O operations will be submitted to storage volumes. I/O scheduling is sometimes called disk scheduling .
A display device is the most common form of output device which presents output visually on computer screen. The output appears temporarily on the screen and can easily be altered or erased. With all-in-one PCs, notebook computers, hand held PCs and other devices; the term display screen is used for the display device.
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Specifically, multimodal systems can offer a flexible, efficient and usable environment allowing users to interact through input modalities, such as speech, handwriting, hand gesture and gaze, and to receive information by the system through output modalities, such as speech synthesis, smart graphics and other modalities, opportunely combined.