Pixel

Pixel (a word searched from "Picture Element") is a basic unit of programmable color on computer display or in computer image. Think of this as a logical rather than a physical unit. The physical size of a pixel depends on how you set the resolution for the display screen. If you have set the display to its maximum resolution, the physical size of the pixel will be equal to the physical size of the dot pitch of the display (let's just call it dot size). If, however, you have set the resolution to minimize the maximum resolution, then a pixel will be larger than the physical size of the screen dot (i.e., a pixel will use more than one dot).

The specific color color described by a pixel is a mixture of some of the three components of the spectrum - RGB. Three bytes of data are allocated to specify the color of the pixel, one byte for each major color component. A real color or 24-bit color system uses all three bytes. Nonetheless, many color display systems only use one byte (limiting the display to 256 different colors).

A bitmap is a file that indicates a color for each pixel with a color (y coordinate) for each pixel with horizontal axis or line (which is called x coordinate) and vertical axis. A graphics interchange format file, for example, includes a bitmap of an image (with other data).

The intensity of the screen's image is sometimes expressed as a DPI (dots per inch). (In this use, the word dot means pixel, dot dot as dot pitch.) Dots per inch are determined by both the physical screen size and resolution settings. Low resolution in a given image - less dots per inch - will be on a larger screen because the same data is spread over a large physical area. On the same size screen, the image will have a lower resolution if the resolution setting is reduced - resetting from 800 to 600 pixels per horizontal and vertical line to 640 to 480 means less dots per inch on the screen and an image Less is faster. (On the other hand, personal image elements such as text will be larger in size.)

Pixel changed the picture element to the previous contraction of Pel.