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, and communication of information in computer systems. An important field related to computer science is information theory which studies quantitative aspects of information especially those related to communication channels and data compression.
The field of computer science includes many sub-fields such as Artificial Intelligence (AI), graphics or image processing, DataBase Management Systems (DBMS), networks & security system design, etc. The interdisciplinary nature of CS also gives rise to fields like Computational Linguistics (CL) & Natural Language Processing (NLP). A.I. deals with making computers behave like humans while carrying out tasks such as reasoning & problem solving whereas CL deals with understanding human languages by computers so that they can respond in a way humans expect them to. DBMS involves developing software for managing databases while graphic or image processing involves manipulating digital images using algorithms.
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