Computer science is the scientific and practical approach to computation and its applications. It is the systematic study of the feasibility, structure, expression,
and mechanization of the methodical procedures (or algorithms) that underlie the acquisition, representation, processing, storage, communication of, and access
to information, whether such information is encoded as bits in a computer memory or transcribed in genes and protein structures in a biological cell. 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 and intractable problems), are highly
abstract, while fields such as computer graphics emphasize real-world visual applications.