Computer science or computing science (abbreviated CS or CompSci) is the scientific and practical approach to computation and its applications. A computer scientist specializes in the theory of computation and the design of computational systems.
Its subfields can be divided into a variety of theoretical and practical disciplines. Some fields, such as computational complexity theory (which explores the fundamental properties of computational problems), are highly abstract, whilst fields such as computer graphics emphasise real-world applications. Still other fields focus on the challenges in implementing computation. For example, programming language theory considers various approaches to the description of computation, whilst the study of computer programming itself investigates various aspects of the use of programming language and complex systems. Human-computer interaction considers the challenges in making computers and computations useful, usable, and universally accessible to humans.
Famous quotes containing the words computer and/or science:
“Family life is not a computer program that runs on its own; it needs continual input from everyone.”
—Neil Kurshan (20th century)
“The natural historian is not a fisherman who prays for cloudy days and good luck merely; but as fishing has been styled a contemplative mans recreation, introducing him profitably to woods and water, so the fruit of the naturalists observations is not in new genera or species, but in new contemplations still, and science is only a more contemplative mans recreation.”
—Henry David Thoreau (18171862)