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The image of a puppet "scanned" by Scotsman John Logie Baird on October 2, 1925, during an experiment in London, is often seen as the mark of the birth of television, and he is known as the "father of television". However, this perception is controversial. Because, also in that year, the American Vladimir Zworykin showed his boss his television system at Westinghouse.
Despite the same time, the television systems of John Logie Baird and Vladimir Zworykin were very different. John Logie Baird's television system has been referred to as a mechanical television, while Sfrocking's system has been called an electronic television. This difference is mainly due to the difference in the principle of transmission and reception.
The development of television is complex. There were many people doing the same research at about the same time. The RCA launched the world's first black-and-white television in 1939, set the national standard for color television in 1953, and launched the RCA color television in 1954.
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It was produced in 1927, and the upstairs is so annoying, so let's search for it
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The time when a TV is on the market is not the production time, and the production time refers to the date the TV was manufactured, which is also the production time. The launch date is the time when he officially sells **.
The production date refers to the date and time when the product has completed all the processes on the production line, has been inspected and packaged into a finished product that can be sold on the market. Nowadays, most companies are gradually putting the production date and batch number of the product.
Unification. It will become a smart home entrance similar to mobile phones and smart speakers, not only a home audio-visual entertainment center, but also an information sharing center.
Control management center and multi-device interaction center. Huawei、Glory-led communication brands have entered the home appliance market with smart screens,"Smart screen"Not only is it a home audio-visual entertainment center,It is also an information sharing center、Control management center and multi-device interaction center。
Televisions are categorized by function:
1. Remote control color chain mess machine.
Today's color televisions are equipped with remote control. Compared with the old-fashioned manual and mechanical tuning, it is more convenient to use and more functional. It allows the user to operate the TV at a certain distance from the TV.
2. With karaoke
Functional color TV. A color TV with karaoke function can be used in conjunction with a regular VCR for karaoke singing.
3. Video and color TV combination machine. In order to make it more convenient for the recording and playing of TV programs and karaoke singing, some manufacturers have also produced a combination of sedan car video and color TV, making it a whole.
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In 1924, the British inventor Baird invented the world's first television set - the mechanical television. It worked just like the early cameras, and could only capture images with mechanical scanning, so the first televisions weren't really electronics.
In 1933, Zvorykin invented the prototype of the modern television set - the electronic television. Later, the American Radio Corporation spent four million dollars on the work of refinement and refinement. Finally, the TV became a practical household appliance.
In 1958, Tianjin Wireless Electronics Factory manufactured China's first black-and-white television set, named "Beijing", and was known as: "China's first screen". In the same year, the TV station began a trial broadcast.
That year, there were only a few dozen televisions in China. At that time, there was a TV set, and in today's popular words, it can be said that it is "wonderful" with Xunxiao.
In 1970, China's first color television set was also born in Tianjin. At that time, Tianjin could be said to be a gathering place for technicians, and they dreamed that one day the TV set could go abroad and go to the world. In fact, the core components such as the picture tube in the domestic TV are all imported.
In 1974, the Beijing Hotel installed China's first cable television set, which had to rely on cable laying. That's because there are a lot of people stealing cables, because cables are too expensive, especially valuable. In the 80s, TV became a necessity for marriage, and it was as important as a house and a car now.
In 1988, China's Chengchang Jinggong launched a synchronous Zhizhi satellite. Two years later, the satellite relayed the live launch of Asiasat-1, which kicked off the prelude to China's satellite television.
In the 90s, TV sets were popularized in China, and every household had a TV set. TVs have evolved from flat screen to liquid crystal and then to plasma. Transmission technology has also shifted from cable to satellite, and the TV industry is getting better and better, but there are fewer and fewer people watching TV.
Because of the advent of the Internet, the existence of television has been completely subverted.
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1925 year. Television was first invented in 1925 by British engineer John Logie Baird. Television uses electricity to transmit real-time images of the event's visual calendar.
Similar to movies, TV uses the visual residual effect of the human eye to show a still image with a gradual change of frames, forming a visual living ** like socks. The transmitter of the TV system converts each fine part of the scene into electrical signals according to the brightness and chromaticity, and transmits them sequentially. At the receiving end, the luminance and chromaticity of each fine part are displayed according to the corresponding geometric position to reproduce the entire original image.
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1. China's first black-and-white TV set was the "Beijing" brand made in Tianjin, which was born on March 17, 1958.
This TV set, which was born in the Great Leap Forward and now seems to be outdated, has a resounding name, called "the first screen in China", which is a 14-inch black-and-white TV produced by the state-owned Tianjin Radio Factory (712 Factory) using domestic electronic tubes and components from the Soviet Union.
2. China's first color TV was born in Tianjin Radio Factory, December 26, 1970.
On December 26, 1970, China's first color TV was born in Tianjin Radio Factory, which opened the prelude to the production of color TV in China, and the "Beijing" brand TV filled the gap in China's TV industry. In 1970, the state-owned Tianjin Radio Factory produced China's first color television set.
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