Input devices are tools used to provide data to computer systems, and they include two main types of graphical interactions: pointing devices and positioning devices. Pointing devices, such as mice, trackballs, and touch screens, allow users to input continuous and multi-dimensional data through motion or surface interaction. These devices facilitate user interaction with computers in a dynamic manner.

1. Input Device
The devices which are used to give input to the
computer system are known as input devices.

2. Two types of graphical interactions
• Pointing Device
• Positioning Device

3. Pointing Device
• A pointing device is an input interface that
allows a user to input continuous and multi-
dimensional data to a computer.
Based on motion of an
object
Based on touching a
surface
 Mouse
 Trackball
 Joystick
 Touchpad
 Graphics Tablet
 Touch Screen
 Light Pen