In this article the author said that there are many parts and technologies involved in the process

of how TV works. The article tackles the main and the most important elements required in order 

for a TV to work. There are three major ways to receive TV signals. Also the article tackles TV

Technology Elements that allow you to view any type of media and reproduce audio signals.

The main and the most important elements required in order for a TV to work include: A video

source, an audio source, a transmitter, a receiver, a display device, a sound device. The video

Source is the image and program. It can be a TV show, a movie, or news program. Usually the

video source has already been recorded by camera. The Audio Source can be in the form of mono,

stereo or digital. The Transmitter is necessary for broadcast TV companies that broadcast free

signals to viewers in their area. It transmits the video and the audio signals over the air waves

which are electrical in nature and are transformed into radio waves. The Receiver is able to grab

radio waves and process them back into audio and video electrical signals that can be now played

on your TV set. The Display Device: it’s usually a TV set. It’s able to receive electrical signals

and the Sound Device which is built into TV set in the form of speakers.

 

There are Three major ways to receive TV signals such as : 

Broadcast Television, Satellite TV,

Cable TV. The Broadcast Television: it's defined as TV signals which are transmitted from

terrestrial source usually a transmission tower. Most of broadcast TV are free to anyone. The

Satellite TV: Satellite TV transmits signals from satellites orbiting the earth. These signals are

usually digital and encoded and compressed and they must be decoded or unencrypted and

decompressed to view on a TV set. This service requires viewers to pay a service fee. TheCable

TV: TV signals are collected from a certain point and sent from the cable company directly to

your home via cable. Cable types used are copper or fiber optic.

As for the TV Technology Elements that allow you to view any type of media and reproduce

audio signals, they include: Cathode Ray Tube, Color Process, Antenna. The Cathode Ray Tube is

generally called CRT and it's a vacuum tube, inside it there are electrons that move rapidly from

one field to another. There electrons stream from a positive to negative electric field onto the

screen created with phosphor that glows when these electrons hit the screen creating image. TV's

create images by creating small pixels or dots on the screen. The Color Process; within the

cathode ray tube is a beam that shoots electrons onto a screen which is coated with Phosphor.

color TV's have three beams; red, blue and green. Color TV's also have one screen which you

view your image from, but behind this screen is a sheet of phosphor. Now the question is 

How to

Create Color? The color TV creates colors by mixing both the three types of color beams (red

 beam, blue beam, and green beam) and the three types of color sheets (red sheet, blue sheet and

green sheet). Finally the Antenna is usually required to pick up and receive TV broadcast signals.

In order to capture a strong TV broadcast signal, an antenna is used. Antennas are usually

composed of materials that can capture radio frequencies (usually metal). They are normally

 planted on the roofs of houses or on top of a structure.

To conclude, the process required in order for a TV to work is complicated and requires many

elements, devices and technologies. The articles has dealt with each in details.