The information technology industry, also known as the information industry, is an industry that uses information means and technology to collect, organize, store, and transmit information and intelligence, provide information services, and provide corresponding information means, information technology and other services. The information technology industry includes: industrial sectors engaged in the production, circulation and sale of information and the use of information to provide services.
Information Technology (IT is Information Technology) is sensing technology, communication technology, computer technology and control technology. Maybe you are not satisfied with this definition, but it is indeed a concise, specific, systematic and practical definition. (Recommended learning: PHP video tutorial)
Sensing technology is the technology to obtain information, communication technology is the technology to transmit information, computer technology is the technology to process information, and control technology is to utilize Information technology.
Therefore, this definition not only gives the content of information technology, but also clarifies the acquisition-delivery-processing-utilization system of information technology, and also clarifies the concepts of sensing, communication, computer, and control. The role and interrelationship of technology in information systems is relatively clear, the field is clear, and the public has a perceptual understanding.
Although the four major technologies of sensing, communication, computer and control perform their own duties in the information system, from the perspective of technical elements, they are mutually inclusive, intersecting, and mutually integrated. Sensing, communication, and computers are all inseparable from control; sensing, computers, and control are all inseparable from communication; sensing, communication, and control are even more inseparable from computers.
All useful data and materials for human social activities can be called information. Information in a broad sense includes not only information about enterprise production and operation activities, but also information about national economy and even world economic activities;
Includes not only economic information, but also scientific and technological information, social and cultural information, life information, etc. Information in a narrow sense mainly refers to micro and macroeconomic information related to enterprise production and operation activities.
Information means and information technology mainly refer to computer systems engaged in information processing, public opinion and communication tools engaged in information transmission, and corresponding information science theories. Therefore, the information technology industry refers to those engaged in the production, circulation and sale of information and corresponding information science theories.
Internet technology has three meanings, namely hardware, software and applications.
The first layer is hardware, which mainly refers to hosts and network communication equipment for data storage, processing and transmission;
The second layer refers to software, including data collection, storage, Various software for retrieving, analyzing, applying, and evaluating information, including what we usually refer to as ERP (Enterprise Resource Planning), CRM (Customer Relationship Management), SCM (Supply Chain Management) and other commercial management software, as well as software used to enhance WF (workflow) management software for process management, DW/DM (data warehouse and data mining) software for auxiliary analysis, etc.;
The third layer refers to application, which refers to collection, storage, retrieval, analysis, and application , Evaluate and use various information, including the application of ERP, CRM, SCM and other software to directly assist decision-making, and also include the use of other decision-making analysis models or technical means such as DW/DM to further improve the quality of analysis and assist decision-makers in making decisions (emphasis on one point , only assists rather than substitutes for human decision-making).
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