Computer network communication and wireless communication Modern communication technology has develo

Wireless communication, this is the development trend.

Generally, the computer network is called Ye Zheng to do the business network. A communication network is called a transport network.

Computer network is one of the services of communication network. For example, optical communication networks include SDH, PTN, and OTN. A communication network transmits data on a computer network as a service.

Computer networks tend to dictate requirements for the content of communication between the two parties, such as protocols and models, and are more like resource subnets. The communication network is biased towards the physical solution that realizes the communication between the two parties, as if a road was actually built when the two sides communicated, and it is more like a communication subnet.

Before the mid-60s of the 20th century, the first generation of computer networks was a remote online system centered on a single computer, and the typical application was an airplane booking system composed of a computer and more than 2,000 terminals in the United States, the terminal was a peripheral device of a computer, including a display and keyboard, without CPU and memory.

With the increase in the number of remote terminals, a front-end unit (FEP) has been added in front of the host. At that time, computer networks were defined as "systems that are connected for the purpose of transmitting information, enabling telematics, or further sharing of resources," and such communication systems already had the rudiments of a network.

Modern communication technologyand computer technology is just one part of information technology.

Information technology (IT) is a general term for various technologies used to manage and process information.

Information technology mainly includes:

2) Computer technology: The technology that uses computers to process data.

3) Microelectronics: Technologies that reduce the size of components, such as CPUs5) Communication technologies: Technologies that transmit information.

Among them, computer technology and communication technology are combined into today's network technology.

There is a certain amount of this to come.

1. Different uses.

Under the management and coordination of network operating system, network management software and network communication protocol, the computer network realizes resource sharing and information transmission. Computer communication transmits information between computers or between computers and terminal devices.

2. The transmission mode is different.

A collection of autonomous computers interconnected by a computer network through lines, to be precise, it is to connect computers, terminals and their ancillary equipment with independent working ability distributed in different geographical locations with communication equipment and communication lines. Computer communication is a direct link between two computers, which can be point-to-point or multi-point communication.

Today's so-called computer communication network is actually a technical concept, which studies the structure, function and service of computer network from the perspective of communication, and does not involve network application systems. The information exchange environment formed by the computer communication network is the open system interconnection environment on which the computer network depends.

Under the new situation, the current situation of computer network communication is diversified and global, and the development trend is the development trend.

With the advent of the information society, computer network communication technology is also developing, optical communication in the era from time to time to carry out updates and ideals under the advancement, people in the office and life have shown their dependence on computer network communication, overnight, the requirements for it will increase, especially the requirements for data processing and transmission of careful function. In this way, there is no way for traditional computer network communication to conform to this society, and there is no way to meet people's needs for computers.

Network technologyBandwidth code computer network (network technology) is the product of the combination of computer technology and communication technology.

There are 3 main reasons for the development of computer networks:

1. The development of the computer terminal equipment manufacturing industry.

2. Advancements in network interconnection devices.

3. Improvement of network service, production of information. Shen Shan.

Digital mobile communication is the transmission and exchange of radio information between moving bodies or between mobile bodies and fixed bodies. It is easy to install, fast networking, good mobility, flexibility and economic benefits, and is a field with strong vitality in wireless communication. It and optical fiber communication constitute the two major development trends of modern communication technology.

First, the application of the treatment is different: liter.

1. The data communication network is established and operated by the telecommunications department, and the telecommunication network that provides data transmission services for the public is a public data communication network;

2. The computer communication network provides communication between network users, between various processors and between users and processors; Computer networks enable a large number of computers to easily transmit information to each other and share hardware, software, data and other resources.

Second, the concept is different:

The data communication network is a telecommunication network composed of providing data communication services; The computer communication network realizes the system of information transmission and exchange between computers; A computer network is a computer system that enables resource sharing and information transfer.

Third, the work process requirements are different:

1. The data transmission service characteristics of the data communication network are specified by a series of communication protocols or regulations;

2. The computer communication network adopts packet switching, and the packets should be queued in the switch, and the switch should process the packets; According to the flow of information, the computer network decomposes the overall function of the network into functional layers, and the same protocol is used between the same functional layers on different machines.

Encyclopedia - Computer Communication Network.

Encyclopedia - Data Communication Network.

1. The development of modern communication technology is gradually turning to intelligence and automation.

2. Modern communication technology is developing towards all-optical networks.

3. Modern communication technology requires its terminals to be standardized and intelligent.

4. Modern communication technology is becoming more and more advanced.