An event driven programs are process of programming by which an algorithm is written by programming on a UI element, placing an event listener such that it handled when triggered by calling a call-back function.
E.g is a click event on a button which is a UI element. An event listener example, mouse down can placed on it, and if a user mouse down on it, it is handled by calling a call-back function which might be to open a new page on website.
