The most common abstraction layer is the programming interface (API) between an application and the operating system. High-level calls are made to the operating system, which executes the ...

An abstract class is a template definition of methods and variables in a specific class, or category of objects. In programming, objects are units of code, and each object is made into a generic class ...

A teenage programmer finds out how to use abstraction in programming. She gives instructions to her "computer" - a human figure with a monitor for a head. She asks him to let people in for a dance ...

Abstraction is one of the four cornerstones of Computer Science. It involves filtering out – essentially, ignoring - the characteristics that we don't need in order to concentrate on those that ...

Harvard University offers 7 free online courses on CS & Programming ...