Fourth screen

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"Fourth screen" is a generally accepted term used in a number of advertising and technology industries, to refer to a small portable video screen such as those found in mobile (cellular) phones or other portable electronic devices such as a video iPod player. Sometimes referred to as the "Third Screen."

While the term is gaining acceptance into popular usage, it is not as well known as “Cell “PDA” and “mobile” which are other terms used in the English-speaking world to refer to these very popular electronic devices.

[edit] History

The term fourth screen originates in reference to the actual historical sequence in the development of video screens.

The first three video screens:

1) The movie screen, also known as the Silver Screen.

2) Television (TV)

3) Personal Computer (PC)

4) the Fourth Screen