What is a TV: why is it needed, what can be replaced

A television is an electronic device that you need to receive and select an image with sound using wireless channels. It differs from other devices with an integrated tuner for receiving high frequencies of a signal.

What is a TV?

You need to understand in detail how the TV looks and why it is needed. Any black-and-white and color LCD TV consists of:

• power supply unit;
• a radio receiver;
• sound amplifier path with loudspeaker;
• video amplifier;
• scan panels;
• panels with a kinescope.

A radio is the main part of the channel selector panel, which is designed to receive TV channels. A channel selector is such a device that amplifies frequencies with a mixer and a local oscillator. When TV frequencies with a picture and sound enter it, they are sent to part of the intermediate-frequency separation amplifiers. In each of them, an unnecessary signal is removed, and the desired one enters the loudspeaker with a kinescope. From the latter, the signals move to the scatter block. Ultimately, through the block, the signal enters the camera’s tube and forms a picture on the screen. The color TV also contains a unit responsible for the color of the image, and several electronic projectors with a phosphor box. Since the end of the last century, a device responsible for changing channels with a remote control has been included in the usual TV module.

Why do I need a TV

TV is considered the most common source for obtaining information and performing:

• informational;
• cultural and educational;
• educational;
• socio-pedagogical;
• recreational function.

The device performs an information function in order to satisfy people's needs for information. A person watches TV and receives information about the world, acquires more information than through other media sources. Usually this is political, economic, social and cultural information.

He performs a cultural and educational function in order to familiarize the user with cultural values ​​by showing performances, films artistic content, television shows, concerts and other events to challenge the need to be inspired by art and literature.

The device performs an educational function for obtaining education by a person due to the broadcast of educational programs, events in a foreign language, and others.

It performs a socio-pedagogical function for the promotion of a certain way of life, the restoration or training of specific spiritual and moral values.

Reference! It performs a recreational function to provide a person with rest and entertainment through showing images that do not affect the brain activity, entertainment programs, films, series and etc.

Also, modern models are equipped with special functions, thanks to which you can:

• launch an Internet browser and work in high quality in it;
• integrate social networks;
• turn on the on-board webcam and communicate via skype with family and friends;
• enable the built-in media player for playing various films, videos and pictures from portable devices;
• control your TV with your voice, gestures to shop online through the TV.

What can be replaced

As for classes to replace the TV, you can culturally enrich your worldview and brain with useful books, self-education, advanced training or training of foreign languages, playing musical instruments, playing with pets, collecting, sports, hobbies and needlework, working or studying in sections, circles or public institutions.

Attention! As for devices to replace the TV, it can be replaced with a tablet, laptop or computer, as well as a mobile phone.

Thanks to the advent of the Internet, now any portable device can be connected to a radio or TV wave and watch your favorite channels anywhere, not just at home. At the same time, broadcasts on portable devices can be saved and recorded on a memory card, and then with the pleasure of revising them, what cannot be done on a TV that is not connected to satellite to television.

In general, a television set is a complex organization, and this can be seen in the photo, which performs more than 10 useful functions for a person, allowing him to receive information about the world and society.