This looks like the dimension of a high definition computer screen - 1366 pixels wide and 768 pixels high. A pixels is defined as a picture element.
That is a 16:9 aspect ratio.
1440x900 is the bigger resolution
1366 x 768 pixels...
yes it is! the screen resolution is 1366 x 768.
Native Resolution is 1366 x 768
Many laptops, especially those with a 15.6 inch screen size, use this widescreen resolution.
can they all use the L650 displays, 15.6 inches, 40 pins, 1366 x 768 screens?
In general, that is a relatively high definition photo. However, the thing that really determines what quality you need is the context. A question like this really can't be answered without any context.
768
23 x 768 = 17664
768 x 49 = 37632