Pixels and Frame Rates
As mentioned, stand close to a 720p HDTV rather than a 1080p set. This is the only way to see how many pixels HDTV takes over analog pixels that were more visible standing close to the screen. Of course, 1080p has so many pixels, we can’t see them with the naked eye. But it’s the only thing that connects analog TV to HDTV is an electron hitting a pixel to collectively form a picture.
To show how many electrons have to hit those pixels, you’d have to generate dozens of electrons per second just to get halfway to hi-def. Back in the day of analog, however, those generated electrons were produced from simple radio waves.
When hi-def TV’s were created, those electrons were sent via binary codes--otherwise known as the familiar series of 1’s and zeros. If you know the basics of how computers worked from the beginning, you know that digital derives from the use of binary codes to form a superior picture.
That particular superior picture is enhanced even more when the binary codes are sent from internal guns in the HDTV to the screen’s pixels at a certain rate of speed. The faster this frame rate, the better picture as is the case in the more expensive HDTV’s on the market. However, the frame rate can vary depending on whether you buy an interlacing HDTV or one with the progressive scan feature.
General consensus says that progressive scan HDTV’s (where the “p" comes from in 1080p) has the better picture due to digital signals being received all at once. Interlaced signals are sent twice to capture all the missed pixels.