Question

What do you mean by pixel how it affect the resolution of screen?

Answer 1

The pixel (a word invented from "picture element") is the basic unit of programmable color on a computer display or in a computer image.

A computer screen uses millions of pixels to display images. These pixels are arranged in a grid horizontally and vertically. The number of pixels horizontally and vertically is shown as the screen resolution.

Screen resolution is typically written as 1024 x 768 (or 1366 x 768 or 1920 x 1080). This means that the screen has 1024 pixels horizontally and 768 pixels vertically.