Why can bitmap graphics produce photographic quality images?

A raster image represents a picture consisting of an array of dots on the screen that have attributes such as coordinates and color.
A pixel is the smallest element of an image on a computer screen.
Screen pixel size approximately 0.0018 inches
A bitmap is like a mosaic, in which each element (pixel) is filled with a specific color. This color is assigned to a specific location on the screen. Moving a section of the image “strips” the paint from the electronic canvas and destroys the drawing.
Information about the current state of the screen is stored in the memory of the video card. Information can also be stored in computer memory – in a graphic data file.
The closest analogs of raster graphics are painting, photography.

Remember: The process of learning a person lasts a lifetime. The value of the same knowledge for different people may be different, it is determined by their individual characteristics and needs. Therefore, knowledge is always needed at any age and position.