what is pixel in computer graphics

A pixel is the smallest element of an image on a computer display, whether it is an LCD or CRT. It is the basic unit of programmable color on a computer display or in a computer image. Pixels are the smallest unit in a digital display, and up to millions of pixels make up an image or video on a devices screen. Each pixel comprises a subpixel that emits a red, green, and blue (RGB) color, which displays at different intensities. The RGB color components make up the gamut of different colors that appear on a display or computer monitor. The number of pixels determines the resolution of a computer monitor or TV screen, and generally, the more pixels, the clearer and sharper the image. The resolution of the newest 8K full ultra-high-definition TVs on the market is approximately 33 million pixels -- or 7680 x 4320. The specific color information that a pixel describes is some blend of three components of the color spectrum -- RGB. Up to three bytes of data are allocated to specify a pixels color, one byte for each major color component. A true color or 24-bit color system uses all three bytes. However, many color display systems use only one byte, which limits the display to 256 different colors.