Light pen is (A) An output device especially designed to produce hardcopy of graphics (B) A television like device used to display data (C) Smallest part of a display screen that can be individually controlled (D) A light sensitive input device that when touched to the screen the presence of light used to select an entry or indicate a position
Option - D , Explanation - A light is sensitive input device that when touched to the screen the presence of light used to select an entry or indicate a position.
