Charles Petzold has been writing about Windows programming for 25 years. A Windows Pioneer Award winner, Petzold is author of the classic Programming Windows, the widely acclaimed Code: The Hidden Language of Computer Hardware and Software, Programming Windows Phone 7, and more than a dozen other books.
If the resolution of the video display is 640 pixels horizontally by 480 pixels vertically, the total amount of memory required is 921,600 bytes, or nearly a megabyte. The number of bits per pixel is sometimes referred to as the color depth or color resolution.