What is a Computer

Some other more abstract definition is :
Computer Science is the systematic study of algorithmic processes that describe and transform information : whether it is related to theories,analysis,design,efficiency,implementation,or applications available to him. Fundamental question related to Computer science is,"what can be automated efficiently".

Wrong Perception About Computer Science
Some misguided perception of Computer Science we can summarie it as follows :
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Computer science is the study of computers. Science Computer science is not just learning about computers,as well as the science of telescope,or biological sciences is also not just learn about science microscope. Computer,telescopes and microcopes are the tools of science,and not the science itself.
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Computer science is the study of how to write computer program.
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Computer science is the study of the use of computer applications.