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Digital television


Auses a vacuum tube to accept signals and convert them into light and color on the screen.
Buses a network of stations to transmit signals.
Cprovides the illusion of movement by showing a sequence of film over a light source.
Duses pixels that can be turned on and off.

Verified Answer :

Final answer:

The best description of digital television is that it uses pixels that can be turned on and off, which allows for enhanced image quality. Other options incorrectly refer to older technologies or general characteristics. Hence, option d is the appropriate choice.


Explanation:

Understanding Digital Television

Digital television (DTV) is an advanced broadcasting technology that enhances the viewing experience compared to traditional analog television. The best choice that accurately describes digital television from the options provided is:

  • d. uses pixels that can be turned on and off.

This characteristic of digital television refers to how images are formed on the screen. Digital signals are composed of small squares called pixels, which are capable of being activated individually to create images in high definition. This allows for improved image clarity and color accuracy.

The other options do not correctly describe digital television:

  1. a. This option refers to older technologies, such as CRT (cathode ray tube) TVs, which used vacuum tubes.
  2. b. While it does use a network of stations, this description is too vague and applies to both digital and analog.
  3. c. This describes how film projectors work but not digital television.

Thus, option d is the only correct answer that highlights the fundamental technology behind digital television.


Learn more about Digital Television here:

https://brainly.com/question/14502349


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