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Peripheral
A peripheral device, or simply peripheral, is an auxiliary hardware device that a computer uses to transfer information externally. A peripheral is a hardware component that is accessible to and controlled by a computer but is not a core component of the computer. It can communicate with a computer through wired or wireless connections. Many modern electronic devices, such as Internet-enabled digital watches, video game consoles, smartphones, and tablet computers, have interfaces for use as a peripheral.
Mouses and keyboards became the standard for computer peripheral input devices in the 1970s, while memory storage devices continued to be developed in new ways. Output devices, such as monitors, began as cathode rays, before switching to LCD monitors in the 1980s.
A peripheral can be categorized based on the direction in which information flows relative to the computer, and is usually categorised one of three ways: Input, output and storage.
Broadly speaking, an input device converts incoming data into binary code, expressed through electrical signals, which is comprehensible to a computer. This includes not just user-inputted information such as instructions, but also potentially information about the environment, such as temperature or pressure. Input devices in turn can be categorized based on:
Examples include a mouse, keyboard, scanner, game controller, microphone and webcam.
An output device reverses the process of an input device, turning binary code for machines into comprehensible input for a user. 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. The display devices are also used in home entertainment systems, mobile systems, cameras and video game systems.
Display devices form images by illuminating a desired configuration of Raster display devices are organized in the form of a 2-dimensional matrix with rows and columns. This is done many times within a second, typically 60, 75, 120 or 144 Hz on consumer devices.
Other examples include a monitor, printer, headphones, and speakers.
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Peripheral
A peripheral device, or simply peripheral, is an auxiliary hardware device that a computer uses to transfer information externally. A peripheral is a hardware component that is accessible to and controlled by a computer but is not a core component of the computer. It can communicate with a computer through wired or wireless connections. Many modern electronic devices, such as Internet-enabled digital watches, video game consoles, smartphones, and tablet computers, have interfaces for use as a peripheral.
Mouses and keyboards became the standard for computer peripheral input devices in the 1970s, while memory storage devices continued to be developed in new ways. Output devices, such as monitors, began as cathode rays, before switching to LCD monitors in the 1980s.
A peripheral can be categorized based on the direction in which information flows relative to the computer, and is usually categorised one of three ways: Input, output and storage.
Broadly speaking, an input device converts incoming data into binary code, expressed through electrical signals, which is comprehensible to a computer. This includes not just user-inputted information such as instructions, but also potentially information about the environment, such as temperature or pressure. Input devices in turn can be categorized based on:
Examples include a mouse, keyboard, scanner, game controller, microphone and webcam.
An output device reverses the process of an input device, turning binary code for machines into comprehensible input for a user. 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. The display devices are also used in home entertainment systems, mobile systems, cameras and video game systems.
Display devices form images by illuminating a desired configuration of Raster display devices are organized in the form of a 2-dimensional matrix with rows and columns. This is done many times within a second, typically 60, 75, 120 or 144 Hz on consumer devices.
Other examples include a monitor, printer, headphones, and speakers.