Television

A television is a device that uses electronic technology to transmit moving image pictures and audio signals according to the visual persistence characteristics and visual psychology of the human eye, that is, a television receiver. It is also an important broadcast and video communication tool. The basic system of the television is composed of three parts: camera, transmission and development. The television was first invented by the British engineer John Logie Baird in 1925. The working process of the television system is to send the fine parts of the scene according to the brightness and After the chrominance is converted into an electrical signal, it is transmitted sequentially. At the receiving end, the brightness and chrominance of the fine parts are displayed according to the corresponding geometric position to reproduce the entire original image. The earliest origin of televisions was in 1929. With the development of science and technology, the definition of televisions became clearer and clearer. People used to view news, movies, and also gave children education classes. With the advancement of modern science and technology and the continuous improvement of people’s economic living standards, the penetration of mobile phones and computers is getting higher and higher. TVs are used less and less in people’s homes, and more and more time is spent on computers and mobile phones. In my home TV are used by elders such as parents, grandparents. Television is still essential for a family. 

Reference list

Hur, J. (2019). History of the Television. [online] Available at: https://bebusinessed.com/history/history-of-the-television/ [Accessed 27 Nov. 2019].

Stephens, M. (2019). History of Television – Mitchell Stephens. [online] Nyu.edu. Available at: https://www.nyu.edu/classes/stephens/History%20of%20Television%20page.htm [Accessed 27 Nov. 2019].