"Computer Science" and "Information Technology" are completely different subjects.
"...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..."
-Advanced Computer Machinery (ACM)"... 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.
-Information Technology Association of America (ITAA)It should be noted that in Europe, "Computer Science" is either similar or identical to the field of "Informatics" or "Informatique".
More simply:
"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".
"Information Technology" is the mixture and application of "Programming", "Hardware Administration", "Software Administration", "Networking", "Network Security" and "Technical Support". In otherwords, the "management of computers".
Source : http://wiki.answers.com
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