Pixels

• A pixel is the smallest unit of a digital image or graphic that can be displayed and represented on a digital display device.

• A pixel is also known as a picture element.

• A pixel is represented by a dot or square on a computer monitor display screen. 

• Pixels are combined to form a complete image, video, text or any visible thing on a computer display.

• The physical size of a pixel depends on how we have set the resolution of the display screen.

 What is Sub-Pixel:

• Each pixel actually composed of three dots a Red, Green, Blue. The three dots must converge at the same point for the image to be sharp, if not the image will be fuzzy.

• Each pixel can have typically three dimensions of variability as Red, Green, Blue. Depending on the intensity of  RGB different colors are produced.

 Example: