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, sounds, graphics, images, etc.). ).
Information technology in a broad sense refers to the sum of various methods, tools and skills that can fully utilize and expand the functions of human information organs. This definition emphasizes the philosophical exposition of the relationship between information technology and human nature.
In Chinese, information technology refers to the sum of various technologies for collecting, transmitting, storing, processing and expressing information. This definition emphasizes people's general understanding of the functions and processes of information technology.
In a narrow sense, information technology refers to the sum of technologies that use computers, networks, radio, television and other hardware devices, software tools and scientific methods to acquire, process, store, transmit and use various information such as words, images and sounds. This definition emphasizes the modernization and high-tech content of information technology.
Extended data perception technology, together with computer technology and communication technology, is called the three pillars of information technology. From the perspective of Internet of Things, sensor technology is an important symbol to measure a country's informatization level. As the second Hangzhou Internet of Things and sensor technology application summit forum, it will promote the rapid development of sensor industrialization in China.
Sensing technology is a multidisciplinary modern science and engineering technology that obtains information from natural resources and processes (converts) and identifies it. It involves the planning and design, development, manufacturing/construction, testing, application, evaluation and improvement of sensors (also known as transducers) and information processing and identification.
Obtaining information depends on various sensors, including various physical, chemical or biomass sensors. According to the convexity theorem of information theory, the function and quality of the sensor determine the amount and quality of natural information obtained by the sensing system, which is the first key to build a high-quality sensing technology system. Information processing includes signal preprocessing, post-processing, feature extraction and selection.
References:
Baidu encyclopedia-information technology