What is one of the commonly used communication methods, and its characteristics are what, what, what?

Ancient people's way of communication: horseback riding to send mail, postal delivery is an early organized way of communication. A whole set of evacuation system was formed in Qin and Han Dynasties. During the Sui and Tang Dynasties, the cause of post-biography got unprecedented development. In the Song Dynasty, all official documents and letters were called "delivery", and "express delivery shop" appeared. This is general information transmission. In the war, war and wolf smoke are both means of communication, the number and direction of enemies are different, and there are pigeons and semaphores on the sea. Of course, most of the letters between ordinary people are sent by people, or they are just oral messages (so that they are different in the end) and so on.

There are many modern communication modes, such as wired/wireless communication, laser communication and network communication.

Modern means of communication are far more advanced, reliable and popular than those in ancient times, and people are closely related, unlike those used by the state or the army in ancient times. What is important is that many communication methods now pay more attention to confidentiality, which is also the requirement of the development of the times. Similarly, there are more side effects than in ancient times, such as dependence on mobile phones.

The world's first telephone came out. The inventor of this telephone is Julia Bell, a Scottish youth.

the instant communication software

Features: annual skin display visual feast skin editor realizes personalized panel creativity

The annual skin carefully created by the design team is more exquisite and fashionable. If you like the personalized QQ panel, you can also use the custom skin and the newly added skin editor to select any local picture for editing and create your own QQ skin.

QQ application box presents new and rich applications to meet colorful life.

Enter the QQ application box to find more interesting applications. In the future, more applications will be presented every few days. Find the application you need and make your online life more colorful. Let's take a look at the new button in the lower right corner of QQ.

QQ SMS first appeared, enjoying the ubiquitous communication experience.

You can easily send short messages to your friends and other contacts by paying 0. 1QB/ message. You can also bind your mobile phone for free, so that you can receive your friends' short messages with your mobile phone, and your mobile phone number will not be seen by your friends and others! Convenient and fast recipient selection, clear bill inquiry, fast and smooth sending and receiving experience ... Please look for QQ short messages in the QQ application box.

Colorful fonts show chat personality and style.

By using colorful words, you can make your chat font unique. Member users have a variety of colorful font selection space. Open the chat window and choose your favorite font.

QQ supports custom tags, and the tag order can be changed at will.

Add custom tab function, and you can change the tab order of QQ panel according to your own preferences. Press and hold the tab you want to drag to change the tab order. If you put the Weibo label in the first column, every time you open QQ, Weibo message will be displayed first. Weibo, let's try it quickly.

Weibo message forwarding QQ friends wonderful content to share together.

Now you can forward Weibo message to your QQ friends with one click! Forgot to copy and paste. You just need to right-click on the Weibo message you want to share and select your QQ friends, so you can easily send Weibo content to your friends and let your friends share the happiness and excitement of Weibo with you.

Weibo news reminds Weibo to grasp the dynamic situation immediately.

Want to see others interacting with you for the first time in Weibo? The new version of QQ has added a message reminder function. Whenever you receive a new private message or are mentioned by other users, you will see a new message reminder in the lower right corner of the screen for the first time, and interact with bloggers more immediately, making it easy for you to become a microblogging expert.

Weibo has joined the music function, which makes the audio-visual combination more exciting.

The microblog client has added music function. Now you can play music directly in Weibo, or you can release a Weibo with music to share your favorite music with others, so that Weibo can combine audio and video without monotony.

Features of mobile phone: The so-called 3G mobile phone, in layman's terms, refers to the third generation mobile phone. With the development of technology and economy, mobile phones are no longer the patent of white-collar workers. And there are many kinds and models of mobile phones. From the first generation of analog mobile phones to the second generation of digital mobile phones such as GSM and TDMA, and now to the third generation of mobile phones, mobile phones have become a new generation of mobile communication systems combining voice communication and multimedia communication, and include value-added services such as images, music, web browsing, conference calls and other information services.

Many people first came into contact with 3G mobile phones from a mobile phone advertisement of Nokia. A happy tourist wandered around a strange city with a 3G mobile phone, and the street map displayed in the mobile phone guided him to his destination smoothly. 3G mobile phones have many names. ITU calls it "IMT-2000" and European telecom giants call it "UMTS" (Universal Mobile Telecommunication System). The possible technical standards of 3G mobile phones are WCDMA, CDMA-2000, TD-SCDMA and so on. 3G mobile phone is the product of the integration of communication industry and computer industry. Compared with the previous mobile phone, the difference is too great, so more and more people begin to call this new mobile communication product "personal communication terminal". Even a layman in the communication industry can easily judge whether a mobile phone is the "third generation" from its appearance: most 3G mobile phones have large color display screens, which are often touch-controlled.

The powerful function is based on the extremely high data transmission speed of 3G mobile phones. At present, the transmission speed of GSM mobile communication network is 9.6K kilobytes per second, and the data transmission speed that the third generation mobile phone may eventually reach will be as high as 2 megabytes per second. What supports this point is that Internet technology is fully integrated into 3G mobile phone system, and the most important one is data encapsulation technology. At present, GPRS developed by using data packaging technology on the existing GSM can reach the transmission speed of 384K kilobytes per second, which is equivalent to twice the transmission speed of D-ISDN. 3G mobile phones support high-quality voice, packet data, multimedia services and multi-user rate communication, which will greatly expand the connotation of mobile phone communication.

Want to know what real 3G life is? Your glasses, watches, cosmetic boxes, sports shoes, anything you can see may become a 3G terminal. With the bandwidth and technology available, this multifunctional terminal enables us not only to communicate anytime and anywhere, but also to download and transmit data, pictures and images in both directions. Of course, we can also play online games with strangers we have never met. According to experts, in the 3G era, mobile phones can not only complete voice communication with high quality, but also carry out multimedia communication. Users can write and draw directly on the touch screen of 3G mobile phone and send it to another mobile phone, which may take less than one second. Of course, you can also send this information to the computer or download some information from the computer; Users can use 3G mobile phones to surf the Internet directly, check emails or browse the web. Many models of 3G mobile phones will have their own cameras, which will enable users to use their mobile phones for computer conferences and even make digital cameras "redundant".

There are many more,