1. In ancient China, before the invention of paper, ordinary "letters" were written in lacquer on a thin wooden board called wooden slips. Because wooden slips are generally one foot long, they are also called "foot slips". Later, someone wrote a letter on the silk book, called "ruler element".
2. Information is obtained through carrier pigeon transmission, but the amount of information is small, the transmission speed is slow and the efficiency is low.
3. Information is obtained by writing bamboo slips, but bamboo slips are hard to keep.
4. Get information through newspapers, which are full of news and information.
Second, modern people's methods of obtaining information:
1. Wired communication transmission: such as telephone, fax, telegram, television, etc.
2. Wireless communication transmission, such as walkie-talkies, pagers (obsolete), mobile phones and radios.
3. Digital communication transmission: networked computers, digital TVs and mobile phones. Obtaining information through modern mass media, computer networks and other media has a large amount of information and high communication efficiency. As long as you have electronic products such as mobile phones, you can keep abreast of the latest information.
4. Paper communication transmission, such as letters and newspapers. Get information through libraries and bookstores, from which you can borrow and buy relevant materials.
5. Get information through the crowd, everyone is the source of information. People attract information and spread it in their daily lives.
Extended data:
A, ancient foreign access to information methods:
1. Migratory birds, especially pigeons and geese, are used as communication tools.
2, the way of stuffing, such as hidden in fish belly, cake, steamed stuffed bun, etc.
3, with special sounds, such as bells, drums, firecrackers, etc.
4, with lights, fire, such as Kongming lanterns, beacon towers, wolf smoke, etc.
Step 5 use a drift bottle
6, there are other signs, decorations, etc. , such as the sign of luring the enemy.
Second, animal information transmission:
When an animal's posture and voice are considered to be mainly communicated with other individuals of the same species, it is called animal information transmission.
The light of fireflies plays a role in telling the opposite sex that they exist. This is a kind of information transmission. The types of information transmission are closely related to the sensory function of various animal species. Many mammals often use the smell of body surface secretions, urine and feces as signals to delimit their territory.
Sound is the main means for birds, mammals and other higher animals to transmit information. Songbirds declare their territory by singing. It is said that howler monkeys can produce 15-20 different songs, while chimpanzees can produce more than 30 different songs.
In many mammals, it can be seen that facial expressions, tail movements or body posture changes are all means of information transmission, which can be roughly interpreted as the natural expression of feelings applied to information transmission.
References:
Baidu encyclopedia-information transmission