We'll look at some of the details below. But, in practice it is only necessary to have a basic understanding of these concepts in order to get good scanning results. The monitor creates the colors you see by emitting varying intensities of red, green, and blue light. The colored lights overlap each other allowing the display of millions of different color combinations. A bit is the smallest unit of information that a computer understands.
Bit depth is simply the number of bits that a single pixel generates.
Thus, to compute how many colors a particular bit depth will display, you simply multiply 2 to the power of the bit depth. For example a 4-bit monitor displays 2 to the 4th power , which is 16 colors. Actually Look You can easily see the difference between differing bit depths by changing the display settings on your monitor. If you have a Windows PC, go to your monitor display settings. You will also be able to adjust your screen area, which will affect your resolution.