This is what i know
There are different kinds of computer display standards/display modes that are in use. They are usually a combination of the resolution (specified as the width and height in pixels), color depth (measured in bits), and refresh rate (expressed in hertz).
WUXGA -- 1920 x 1200 -- 16:9 ratio
UXGA -- 1600 x 1200 -- 4:3 ratio
XGA -- 1024 x 768 -- 4:3 ratio
Hope this helped?!