Differences between communication and communication

I. Differences between the concepts of several words

1. Communication and communication

At present, the use frequency of these two words is quite high, but the definition of the word scope is not clear and unified.

1.1 in the traditional sense, communication mainly refers to telephone, telegraph, and telex. A message refers to a message that is transmitted from one end to the other through the communication network. Media messages mainly contain voice, text, images, and video images. The network consists of an electronic equipment system and a radio system. The signals transmitted and processed are simulated. Therefore, the term "communication" should specifically refer to the process of transmitting the preceding media information using media transmission systems such as telegraph and telephone.

1.2 communication refers only to data communication, that is, end-to-end data transmission through computer network systems and data communication systems. Communication information refers to binary data. Data can be used to express information in traditional media forms, such as sound, images, and animations. Because the old communication system has already achieved digital and computer network transformation, it can be considered that the current data communication system has covered the functions of the previous communication system. According to this conclusion, the term "communication" should be used to express data transmission between the Internet and the local area network, so as to avoid conceptual misunderstanding.

2. nodes and nodes, interconnection and interconnection

In technical articles, we often see the concept of "network nodes" and "network nodes" and "interconnection". Are there any clear definitions between them? In fact, this is a purely Chinese problem and has nothing to do with technology. Even if there is a mix, there will be no ambiguity, so these words can be used without any distinction.

3. protocols and standards

There are different protocols or standards on the Internet. The concepts of protocols are similar to those of standards, but they are different.

Protocols are hierarchical, which means that all parties in the communication agree to abide by the protocol at the lower level. For the higher level, the Protocol applies to network applications and management. Therefore, the Protocol is essentially an agreement, and it is a formal agreement. For example, IP is the layer-3 protocol of OSI/RM.

The standard has a wider scope. It includes not only written conventions, but also all uniformly executed rules on the network. Therefore, standards are sometimes referred to as norms or rules. For example, IEEE 802.3u is a fast Ethernet standard developed by the Association of Electrical and Electronics Engineers. It can also be considered as a large type of Ethernet protocol set; category (cat3, cat5) it is a line standard set by the EIA/TIA organizations for unshielded twisted pair wires. It can only be referred to as a standard, not a protocol.

2. The same word has different meanings.

1. bandwidth

In network technology, bandwidth has different meanings in different application scenarios. One refers to the network frequency bandwidth-band width, that is, the difference between the maximum frequency and the minimum frequency of the network signal, in Hz; the other refers to the maximum transmission rate of the LAN, represents the data transmission capability of the LAN, measured in bps.

2. Speed

The communication rate is generally divided into two types: the number of bits transmitted per unit time, also known as the bit rate, data transmission rate, data rate or abbreviated rate; the other is the number of elements transmitted within a unit of time, also known as the bitrate, modulation rate, baud rate, or baud rate ). The bit rate value can be the same or different from the porter rate value. For example, for a modem, its bit rate value in operation is much greater than the porter rate value.

3. Media

Media is a frequently used word. It can be understood as an intermediary used to link two or more things, it is also called media, media, media and interface in different application scenarios, but its meaning is different. When used in the field of public information dissemination, media is called media, such as broadcasting, television, newspapers, magazines, websites, and so on. In computer information processing technology, media is called media information. It usually refers to speech, text, graphic images, animation and other media, that is, multimedia. When used in network and communication technology, it is called media, communication media, and transmission media. The well-known cables, optical cables, radio, microwave, etc. belong to this category. In addition, in the software application field, the part of media information output to users through the display is called the Software User Interface (UI ).

3. Faint dictionary Interpretation

New Practical Chinese Dictionary:

Communication unavailable

Communication 1. transmit messages using telecommunication devices. 2. A news genre that provides detailed reports on typical tasks, files, and messages.

Modern Chinese Dictionary:

Communication correspondence, communication information, etc.

Communication 1. Use telecommunications devices to transmit messages. 2. Articles about messages. This explanation is obviously outdated.

<Communication principle>:

Communication aims to transmit messages.

Kingsoft Mac:

Exchange letters between communications; use letters to reflect the situation

Communication 1. A news genre that provides detailed reports on typical people, events, and messages 2. transmitting messages or audio using telecommunications devices, sometimes back and forth

It seems that the conclusion is not very clear, and it seems that it is almost equivalent to the one used to transmit messages in the media today. for chip communication ports, there are also communication ports, such as serial/parallel communication, and serial/parallel communication. but some of them are just plain words, but they cannot be replaced? For example, if there is a department of communication engineering, there will be no communication tools such as mobile phones and bphosts. At this time, it seems that there are no communication tools.

In short, I personally think that the word "communication" is derived from the original meaning of simple correspondence communication to a great extent. Its meaning can almost cover communication. When it is used for written or formal communication, now we use a little more communication. communication may be more appropriate when it is used in everyday life.