What is TV

A TV is an electronic device that is needed in order to receive and select images and sound using wireless channels. It differs from other devices in having a built-in tuner for receiving high-frequency signals.

What is TV

It is necessary to understand in detail what a TV looks like and why it is needed. Any black-and-white and color LCD TV consists of:

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

The radio receiver is the main part of the channel selector panel, which is designed to receive TV channels. A channel selector is a device that amplifies frequencies with a mixer and heterodyne. When TV frequencies with picture and sound enter it, they are sent to parts of the intermediate frequency isolation amplifiers. In each of them, the unnecessary signal is removed, and the necessary one is sent to a loudspeaker with a kinescope. From the latter, the signals move to the scanner block. Ultimately, the signal enters the camera tube through the block and forms a picture on the screen. Color TV also contains a unit responsible for the color of the image, and several electronic spotlights with a phosphor box. Since the end of the last century, a regular TV module has included a device responsible for changing channels by remote control.

Why do you need a TV

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

• informational;
• cultural and educational;
• educational;
• social and pedagogical;
• recreational function.

The device performs an information function in order to satisfy people's need for information. A person watches TV and receives information about the world, acquires more information than with the help of other media sources. Typically this includes political, economic, social and cultural information.

It performs a cultural and educational function with the goal of introducing the user to cultural values ​​by showing performances, films of artistic content, television shows, concerts and other events to evoke the need to be inspired by art and literature.

The device performs an educational function for a person to receive education through the broadcast of educational programs, events in a foreign language, and more.

It performs a social and pedagogical function to promote a certain way of life, restore or teach specific spiritual and moral values.

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

Also, modern models are equipped with special functions that allow you to:

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

What can be replaced

As for activities to replace the TV, you can culturally enrich your worldview and brain with useful books, self-education, advanced training or learning foreign languages, playing musical instruments, playing with pets, collecting, sports, hobbies and handicrafts, work or study in sections , clubs or public institutions.

Attention! As for devices to replace a 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, broadcast programs on portable devices can be saved and recorded on a memory card, and then you can enjoy watching them, which cannot be done on a TV that is not connected to satellite television.

In general, a TV is a complex device, and this can be seen in the photo, performing more than 10 useful functions for a person, allowing him to obtain information about the world and society.