What is Pu

The Pu ratio refers to the vertical and horizontal proportions of the screen picture, which can be expressed as a recent of two integers, or a decimal number, such as 4:3 or 1.33. General computer monitors and data signals and average TV signals are 4:3 or 1.33 wide, and the ratio of film to DVD and HDTV is 16:9 or 1.78. When the input source image's width and height ratio is different from that of the display device, there is a picture distortion and missing. 16:9 of the images are displayed on the 4:3 screen in 3 ways: The first is a variant (anemographic), which is stretched vertically until the screen is full, so that the image looks thinner than it was; the second is the character box-A (Letterbox-a) method, 16: 9 of the image to maintain its not distorted, but on the screen left a black bar, the third Way is B (letterbox-b) way, is the first two ways of compromise, the horizontal direction of each side out of the screen part of the vertical black bar is also narrower than the second, the image of the width-height ratio of 14:9. In order to cater for the needs of home entertainment, the current home notebook usually has a screen width of 16:9 or 16:10.

Disadvantages:

1, the area is small, the same size widescreen area small Pu big 8% or so.

2, the future of the software for the widescreen design, but now the software is mostly Pu design, such as commonly used word, all menu button status bar on both sides take up a lot of space, plus Word documents are based on A4 paper longitudinal layout, widescreen left and right space is basically wasted, up and down space is seriously inadequate. In this respect, widescreen screen on the large size will have an advantage, anyway, or about the waste or enough to show the document, but also to the left and right to open a word or IE to control, small size screen is certainly not as good as Pu.