Evolution of television devices.

Our children today may not know what it was like to watch television in the past or what the technology was like then. The current era is digital. They are being born in the environment of modern digital technology. The use of various types of digital devices is increasing. All of this is the result of long-term tireless research and effectiveness by technologists. Today we present a limited range of stages in the evolution of television up to the present time.

Television is a wonderful invention of the last century. ‘Tele’ is the Greek word, which means distance and ‘Vision’ is the Latin word, which means seeing. Television is a device through which pictures can be seen from a distance; The sound can be heard again.

Television has changed the world in an unprecedented way. The first television was invented in 1926 by British scientist John Logie Baird. In 1928, the General Electrical Company unveiled the first mechanical television with a 3 "(three-inch) screen. The BBC first started broadcasting television. Television was introduced on a commercial basis in 1940. Television came into the role of media in the 1950s. Television started its journey in Bangladesh on 25 December 1974.

In 1938, only 10 sets of French TVs were made under the name Immivisar. The eight-inch screen TV used a magnifying lens to view images. Weighing more than 45 kg, the screen of the Marconi TV was only seven inches. Then in 1948 came the seven-inch screen TV Motorola's 'Golden View'. This TV was the most affordable and best TV of that time. In 1949 came the new round TV Parthol. It had the capacity to capture 12 channels.

The first remote-controlled TV came on the market in 1950. In 1953, a Japanese company marketed a 14-inch television with a sharp wooden frame, which was quite expensive.

The first color television came in 1954. Its screen was 15 inches. Filco Predica, a modern retro design TV of the fifties with 18 to 21 inch screens. It came on the market in 1956. Then in 1972 the Japanese made TV was 'Maidensa'. Its screen was 10 to 21 inches. In 1971, the Japanese made the first HDTV or high-definition TV. In 1997, the world-famous Japanese electronics company Sony launched the Sony FD Trinitron Vega. This TV is enhanced in size and various other aspects with the ceremony of many channels.

Then came the massive changes to the TV set. Slim LCD TV has taken the place of the once big box ‘cathode ray tube’. It has been the fruit of technological advancement. LED TV came on the market in 2006. Flat panel TVs became very popular in a very short time. The Korean company Samsung TV was at the top of the sales list. This could be called the introduction of flat television and high resolution plasma TVs.

As a result of this advancement in technology, there is no longer any difference between a TV screen and a computer screen. Due to the increase in resolution, the picture quality of the TV has improved a lot, which is also comfortable for the eyes. In 2012, Samsung launched the first smart TV. Internet and various apps are connected to the smart TV. These Internet based TVs are called IPTV. Its signal goes through the internet. Just as there is a difference between basic TV and internet TV, there is also a difference in price. The purchase price of internet TV is comparatively higher than that of basic TV. By accessing IPTV, people can connect with any part of the world from their home.

In 2013, Samsung brought curved TV to the market. Currently LG and Japanese Sony are also marketing Sony Four-K TVs. The state-of-the-art FourK TV is much faster than the LED TV. It has many benefits including smart remote, voice control.