IT is Information Technology (English: Information Technology), also known as Information and Communications Technology (ICT), is mainly used for management and processing The general term for various technologies used in information, mainly applying computer science and communication technology to design, develop, install and deploy information systems and application software.
According to the difference in storing and processing information, the development of information technology can be divided into several different stages: pre-mechanical period (3000 BC – 1450 AD), mechanical period (1450–1840), electromechanical period ( 1840–1940) and the electronic period (1940–present).
In the business field, the Information Technology Association of America (ITAA) defines information technology as "the research, design, development, application, implementation, maintenance, or application of computer-based information systems." Tasks related to this area include network management, software development and installation, planning and management of the information technology life cycle within the organization, including maintenance, upgrades and updates of software and hardware.
The term information technology first appeared in the Harvard Business Review in 1958, in an article written by Harold J. Leavitt and Thomas L. Whisler, which mentioned that "this new technology has not yet A single name, we should call it information technology (IT).”
The study of information technology includes the disciplines of science, technology, engineering and management, the application of these disciplines in the management, transmission and processing of information, related software and equipment and their interaction.
The application of information technology includes computer hardware and software, network and communication technology, application software development tools, etc. Since the popularization of computers and the Internet, people have increasingly used computers to produce, process, exchange and disseminate various forms of information (such as books, business documents, newspapers, records, movies, TV programs, voices, graphics, images, etc.).
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