The word Pixel is based on a contraction of Pix (Picture)
Pixel is Picture(image) Element. Pixel is the smallest controllable element of a picture represented on the screen.That a computer is able of printing or displaying.These small little dots are what make up the image.
Pixels are manufactured in a two-dimensional arranged in rows and columns grid, and are often represented using dots or squares,More Pixel per inch (ppi) is display high resolution. In color image systems, a color is typically represented by three or four Color such as Red, Rreen, and Blue, or Cyan, Magenta, Yellow, and Black.
Each Pixel can only be one color at a time.The number of colors each pixel can be is determined by the number of bits used to represent it.The number of bits used to represent each Pixel determines how many colors or shades of gray can be displayed.