The definition and some types of input devices

An input device for a computer allows you to enter information. The most fundamental pieces of information are keystrokes on a keyboard and clicks with a mouse. These two input devices are essential for you to interact with your computer. Many other input devices exist for entering other types of information, such as images, audio and video. Input devices represent one type of computer peripheral - the other two types are output devices and storage devices.

•  Keyboard 
•  Mouse 
•  Touch Screen 
•  Scanner 
•  Camera 
•  Microphone 
•  Light pen