“Computer Science” is the mixture and application of “Applied Mathematics”, “Electrical Engineering”, and “Complexity Theory/Algorithms” to understand and/or model information. In otherwords, the “field of computation”.
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Computer science is interpreted broadly so as to include algorithms, data structures, computational complexity theory, distributed computation, parallel computation, VLSI, machine learning, computational biology, computational geometry, information theory, cryptography, quantum computation, computational number theory and algebra, program semantics and verification, automata theory, and the study of randomness. Work in this field is often distinguished by its emphasis on mathematical technique and rigor.
Information Technology is the study, design, development, implementation, support or management of computer-based information systems, particularly software applications and computer hardware.” IT deals with the use of electronic computers and computer software to convert, store, protect, process, transmit, and securely retrieve information.
Computer science (academically, CS, CSC or compsci) encompasses a variety of topics that relates to computation, like abstract analysis of algorithms, formal grammars, and subjects such as programming languages, program design, software and computer hardware. A computer is one that computes, where com- (with, together) joins putare (Latin root, to reckon, to think, or section as in to compare pieces), so by definition, computer science (Latin: scientia, knowledge) is the accumulated knowledge through scientific methodology by computation or by the use of the computer. Computer scientists study what programs can and cannot do (see computability), how programs can efficiently perform specific tasks (see algorithms and complexity), how programs should store and retrieve specific kinds of information (see data structures and databases), how programs might behave intelligently (see artificial intelligence), and how programs and people should communicate with each other (see human-computer interaction and user interfaces). Most research in computer science has focused on von Neumann computers or Turing machines (computation models that perform one small, deterministic step at a time). These models resemble, at a basic level, most real computers in use today. Computer scientists also study other models of computation, which includes parallel machines and theoretical models such as probabilistic, oracle, and quantum computers.
More Computer science has roots in electrical engineering, mathematics, and linguistics. In the last third of the 20th century computer science emerged as a distinct discipline and developed its own methods and terminology. The first computer science department in the United States was founded at Purdue University in 1962, while the first college entirely devoted to computer science was founded at Northeastern University in 1980. Prior to this, CS was taught as part of mathematics or engineering departments, for instance at the University of Cambridge in England and at the Gdansk University of Technology in Poland, respectively. Cambridge claims to have the world’s oldest taught qualification in computing. Most universities today have specific departments devoted to computer science, while some conjoin it with engineering, with applied mathematics, or other disciplines.
information technology (IT) or information and communication technology (ICT) is the technology required for information processing. In particular the use of electronic computers and computer software to convert, store, protect, process, transmit, and retrieve information from anywhere, anytime.
Computer science, in every school I’ve ever seen, is programming. So its the study of algorithms, data structures, complexity theory, all the way down to learning what makes an operating system work. Its the science of computing, not the electrical engineering of the hardware, as some seem to think. That’s an entirely different topic.
Information technology is learning to use computers in business or in any practical application. While most schools require at least some basic programming courses for information technology, they don’t become programmers. It is simply so they understand, at a very basic level, what is involved behind the scenes.
Put simply, computer science is learning to program applications and the theory behind that. Information technology is learning to use technology in business.
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