What are the media?

The four traditional media are: 1, newspaper; 2. TV; 3. broadcasting; 4. magazines; In addition, there should be outdoor media, online media and new media, such as short messages.

newspaper

Newspaper is a kind of printed publication, which mainly publishes news and current affairs comments and is distributed to the public on a regular basis. It is an important carrier of mass communication and has the function of reflecting and guiding public opinion.

TV

Television? (TV, TV, video) refers to the use of electronic technology and equipment to transmit moving images and audio signals, that is, TV receivers, which are also important tools for broadcasting and video communication. Television was first invented by British engineer John Logie Baird in 1925. Television uses electricity to transmit moving visual images instantly. Similar to movies, TV uses the visual residual effect of human eyes to gradually change the still image frame by frame to form a visually moving image. The transmitter of the TV system converts every tiny part of the scene into electrical signals according to the brightness and chromaticity, and then transmits them in turn. At the receiving end, the brightness and chromaticity of each tiny part are displayed according to the corresponding geometric position to reproduce the whole original image. The progress of science and technology is an important reason for the rapid popularization of television. The scanning system and channel bandwidth of TV signals in different countries are not exactly the same. According to international radio consultative committee's suggestion, Latin letters are used to distinguish them.

broadcast

Broadcasting refers to a news communication tool that transmits sound through radio waves or wires. Programs transmitted by radio waves are called wireless broadcasting, and programs transmitted by wire are called wired broadcasting. Broadcasting was born in the 1920s. The advantages of broadcasting are wide audience, fast communication, diverse functions and strong appeal; The disadvantage is that it is fleeting, and you can't choose if you listen in sequence. If you don't know the language, it will sound difficult.

magazine

Magazine, with a fixed title, is a kind of printed reading material published regularly or irregularly in the order of number, volume, year and month. According to a certain editing policy, it collects the works of many authors and publishes them in a book, which is also called a periodical. The formation of "magazine" comes from propaganda pamphlets in strikes, strikes or wars. This kind of manual, which pays attention to the timeliness of newspapers and takes into account more detailed comments, has given birth to a new media for such special reasons. The earliest published magazine was Scholar published in June 65438 +0665 +654381October in Amsterdam, France. Wu Zhuan, the earliest journal of Chinese medicine in China, was founded in the 57th year of Qing Qianlong (A.D. 1792) and stopped publishing in the 6th year of Qing Jiaqing (A.D. 180 1 year), which lasted 10 years and was published/KLOC-0. Its manuscript was provided by famous doctors in Jiangnan at that time, so it was named "Wu Lecture". Any magazine is published under its own "ISSN" (international standard serial publication number).