A Model , which represents the underlying, logical structure of data in a software application and the high-level class associated with it. This object model does not contain any information about the user interface.
A View , which is a collection of classes representing the elements in the user interface (all of the things the user can see and respond to on the screen, such as buttons, display boxes, and so forth)
A Controller , which represents the classes connecting the model and the view, and is used to communicate between classes in the model and view. The MVC model also provides full control over HTML, CSS, and JavaScript.