im confused with monitor resolution?

[esa193]

wat is high deff?
wats like 720p and wats like 1080p
and isnt there like a high one to for comps?
also what cables can give a high deff signel

 

[borat_sagdiyev]

High definition if the resolution of 1920 x 1080 pixels.

http://upload.wikimedia.org/wikipedia/en/9/98/Common_Video_Resolutions.svg
http://en.wikipedia.org/wiki/Display_resolution