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Computers have to have output devices in order to relay information back to other devices for its use. If computer information remaines exclusively in the computer, then it is useless, because nothing is done with it. Even in the case of stored data, the information is often relayed to another computer with output devices, or directly to an output device, so that it can affect the outer world.

Output devices include: screens, electric motors, cars, lights, speakers, etc.

Without output devices, it would be, in addition, impossible to determine the inner workings of computers without output devices, as any modifications to allow the viewing of the information/functionality would be considered an output device.

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Wiki User

14y ago
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Wiki User

13y ago

How would you know if you are on facebook or even if your computer is on?

or how would you see what your typing??

You need Output devices to see what information you are entering with you input devices.

Your input devices would be your keyboard and your mouse and your output would be your monitor :)

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13y ago

Computer needs data to operate, its useless without informations. Input devices are used to provide these data. You use keyboard to write a document in a text editor. You use a mouse to draw objects in a graphic program. You use a microphone to record your voice.

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10y ago

Speaker,monitor,printer are output devices. these give out information regarding the computer.

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Q: Why do we need output devices?
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input devices put information in your computer and output devices give out info.Here is a more "elaborate" answer.Input Devices:KeyboardMouseStylusScannerDigital CameraOutput Devices:MonitorPrinterSpeakersKyeboard


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A digital camera could be used as input as well as output devices.


What are output devices and their function?

Output devices are computer devices that are used to communicates data in a human-readable form. Speakers are used to output sound, monitors are used to output data visually, and printers are used to output data physically on paper.