Input and output devices are computer hardware components. An input device is a component used to feed information to a computer, whereas an output device gives processed information back to the user.
Common Devices
The most common input devices are the keyboard, mouse, scanner, webcam, microphone and joystick. Output devices typically include the display monitor, speaker and printer.
Sequence
In computing, input devices are used before output devices. A user uses the keyboard and mouse to type in and navigate to a video on the Internet. The processor processes the information and plays the video back as moving images on screen and accompanying audio on the speakers.
Form
Input devices are physically interacted with by the user and have buttons, keys, a lens or some other component that is responsible for the actual data input. Output devices are never contacted, are usually larger, and typically have a screen or set of speakers for data output.
Output Types
Data output can be of two different types. When a monitor shows an open document, it is known as a "soft copy" because the image can be replaced by closing the window. When a printer prints the document, it is known as a "hard copy" because the printed information is permanent and cannot be replaced.
Price
Input devices are usually cheaper than output devices.
Tags: copy because, document known, input devices, Input devices, keyboard mouse, output devices
