Question: Trackball is output device

Answer:

No, a trackball is an input device, not an output device. A trackball is a pointing device that is used to move the cursor on the computer screen. It consists of a ball that can be rotated with the fingers or palm, and sensors inside the device detect the movement of the ball and translate it into cursor movement. Trackballs are often used in situations where a traditional mouse is not practical, such as in industrial settings, where the device needs to be operated with gloves, or in situations where there is limited space available for mouse movement. Some trackballs also include buttons and other controls that can be used to perform various actions in the software being used.