Sensing technology, computer technology and communication technology are also 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.

2. Communication technology

Communication technology, also known as communication engineering (also known as information engineering, telecommunications engineering, formerly known as long-distance communication engineering and weak current engineering), is an important branch of electronic engineering and one of the basic disciplines. This course focuses on the principle and application of information transmission and signal processing in communication. Communication engineering studies the transmission of information from a sender (source) to one or more receivers (sink) by electric pulses in the form of electromagnetic waves, sound waves or light waves.

3. Computer technology

The content of computer technology is very extensive, which can be roughly divided into computer system technology, computer equipment technology, computer component technology and computer assembly technology.

Computer technology includes: the basic principle of operation method and the design of arithmetic unit, instruction system, design of central processing unit (CPU), pipeline principle and its application in CPU design, storage system, bus and input/output.

Expanding Information Using the Internet, people can not only enjoy resources, but also exchange information, keep in touch and entertain. Nowadays, many people can't live and work without the Internet. The realization of the network makes a single and scattered computer organically connected into a system, which mainly has the following functions:

1, resources * * *

The main function of the network is to enjoy resources. * * * The resources enjoyed include software resources, hardware resources and various data resources stored in public databases. Online users can enjoy some or all of these resources, so that the resources in the network can exchange needed items and cooperate with each other, thus greatly improving the utilization rate of system resources.

2. Rapid transmission of information

Computer systems distributed in different regions can transmit all kinds of information, exchange data and send emails in time and at high speed through the network, which makes people more closely connected.

3. Improve system reliability

In the network, due to the cooperation and backup between computers, as well as the use of some backup devices, load scheduling, data fault tolerance and other technologies in the network, when a part of the network fails, other parts of the network can automatically take over its tasks. Therefore, compared with stand-alone systems, computer networks have higher reliability.

4. It is easy for distributed processing.

In the network, a big problem or task can be decomposed into several sub-problems or tasks, which are distributed to different computers in the network for processing and calculation. This distributed processing capability is effective in the research and development of some major projects.

5. Integrated information services

In today's information society, individuals, offices, libraries, enterprises and schools are generating and processing a large amount of information all the time. This information may be words, numbers, images, sounds and even videos, which can be collected, processed and transmitted through the network. Therefore, integrated information service will become the basic service function of the network.

Baidu Encyclopedia-Internet Technology