Using Screen Space Efficiently
How images appear on your monitor, and how efficiently you use the monitor’s viewable area, is a function of two measurements: the color quality and the screen resolution.
The color quality is a measure of the number of colors available to display images on the screen. Color quality is usually expressed in either bits or total possible colors. For example, a 4-bit display can handle up to 16 colors (since 2 to the power of 4 equals 16). The most common values are 16 bit (65,536 colors), 24 bit (16,777,216 colors), and 32 bit (4,294,967,296 colors). In Windows XP, they are known as Medium, High, and Highest, respectively.
The screen resolution is a measure of the density of the pixels used to display the screen image. ...