- Input and output devices are typically housed externally to the main computer chassis. The following are either standard or very common to many computer systems.
Input
Main article: Input device
Text input devices
Keyboard - a device to input text and characters by depressing buttons (referred to as keys or buttons).
Pointing devices
Mouse - a pointing device that detects two dimensional motion relative to its supporting surface.
Optical Mouse - uses light (laser technology) to determine mouse motion.
Trackball - a pointing device consisting of an exposed protruding ball housed in a socket that detects rotation about two axes.
Touchscreen - senses the user pressing directly on the monitor.
Gaming devices
Joystick - a hand-operated pivoted stick whose position is transmitted to the computer.
Game pad - a hand held game controller that relies on the digits (especially thumbs) to provide input.
Game controller - a specific type of controller specialized for certain gaming purposes.
Image, Video input devices
Image scanner - a device that provides input by analyzing images, printed text, handwriting, or an object.
Web cam - a video camera used to provide visual input that can be easily transferred over the internet.
Audio input devices
Microphone - an acoustic sensor that provides input by converting sound into electrical signals.
[edit]Output
Main article: Output device
Printer - a device that produces a permanent human-readable text of graphic document.
Dot Matrix Printer
Laser Printer
Ciode display
OLED - Organic Light-Emitting Diode
Monitors
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