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2. Digital signage - Wikipedia

   en.wikipedia.org/wiki/Digital_signage

   Digital signage on the side of a building reports stock prices. Dow Jones News Ticker, Times Square Digital signage is a segment of electronic signage.Digital displays use technologies such as LCD, LED, OLED, projection and e-paper to display digital images, video, web pages, weather data, restaurant menus, or text.

3. Cathode-ray tube - Wikipedia

   en.wikipedia.org/wiki/Cathode-ray_tube

   Since the early 2010s, CRTs have been superseded by flat-panel display technologies such as LCD, plasma display, and OLED displays which are cheaper to manufacture and run, as well as significantly lighter and thinner. Flat-panel displays can also be made in very large sizes whereas 40–45 inches (100–110 cm) was about the largest size of a CRT.

4. Frame rate - Wikipedia

   en.wikipedia.org/wiki/Frame_rate

   In these contexts, frame rate may be used interchangeably with frame frequency and refresh rate, which are expressed in hertz. Additionally, in the context of computer graphics performance, FPS is the rate at which a system, particularly a GPU, is able to generate frames, and refresh rate is the frequency at which a display shows completed ...

5. Smartphone - Wikipedia

   en.wikipedia.org/wiki/Smartphone

   A distinction between different camera software is the method used to store high frame rate video footage, with more recent phones [a] retaining both the image sensor's original output frame rate and audio, while earlier phones do not record audio and stretch the video so it can be played back slowly at default speed.

6. NTSC - Wikipedia

   en.wikipedia.org/wiki/NTSC

   The horizontal line rate was reduced to approximately 15,734 lines per second (3.579545×2/455 MHz = 9/572 MHz) from 15,750 lines per second, and the frame rate was reduced to 30/1.001 ≈ 29.970 frames per second (the horizontal line rate divided by 525 lines/frame) from 30 frames per second.

7. iPhone - Wikipedia

   en.wikipedia.org/wiki/IPhone

   The iPhone is a line of smartphones developed and marketed by Apple that run iOS, the company's own mobile operating system.The first-generation iPhone was announced by then–Apple CEO Steve Jobs on January 9, 2007, at Macworld 2007, and launched later that year.