Input Devices
An input device is a piece of hardware used to provide information to a computer or information processing system. These devices enable users to input data and control signals into the system.
Main Examples of Computer Input Devices
- Keyboard
- Mouse
Keyboard
A keyboard is a device that allows users to type text, numbers, symbols, and other commands into the computer.
Types of Keyboards
- Standard keyboard
- Enhanced keyboards
Features of a Keyboard
- 12 or 10 function keys (F1 - F12)
- 26 alphabetic keys
- 16 or 17 numeric keys
- Special keys such as arrow keys, insert, delete, home, end, page up, page down, caps lock, etc.
Mouse
A mouse is a pointing device that detects two-dimensional motion relative to its supporting surface.
Types of Mouse
- Mechanical mouse
- Optical mouse
- Optomechanical mouse
Features of a Mouse
- Left click
- Right click
- Roller
Other Examples of Input Devices
- Joystick: A device with a base and a movable rod, used for navigation and control.
- Scanner: Converts physical images into digital form.
- Light pen: Allows input by pointing at a display screen.
- Digital camera: Captures and stores digital images.
- Touchpad: A pad used for pointing and controlling a computer.
- Graphics tablet
- Barcode reader
- Musical keyboards
- Touch screen
- Modems
- Magnetic ink character reader (MICR)
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