People
People are the most important part of a computer and communication system. Two types of people use information technology - computer professionals, and end-users.
A Computer Professional, or an information technology professional, is a person who has an extensive or a considerable experience in the technical aspects of using a computer and communication system, For example, a computer programmer creates the programs (software) that process the data in a computer system,
An End-User or simply a user is some one with moderate technical knowledge of information technology who uses computer for entertainment, education, or work-related tasks. For example a person who does not know exactly how the Internet works but who knows how to use it.
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