Resolution is a dot that can be displayed on the screen. Or Pixel (Abbreviation for Picture Element)
Is the number Higher resolutions increase the number of dots displayed per inch, making the image sharper. The monitor should be able to accept higher resolutions.
Higher resolutions will increase the processing requirements on graphics boards and PCs. Graphics cards from computers manufactured three or four years ago may support at least 1024×768 resolution. Some can support up to 1600 x 1200. Older systems can only support up to a maximum resolution of 800 x 600