captaincranky : I think
jobeard's point was to do with the 'P' designation, which stands for
progressive scan, which has nothing to do with modern computing.
Well, yes it does, or at least a lot more than you might think. "Progressive scan", means that the whole screen is redrawn with every frame. With 1080p the entire screen is redrawn 60 times per second.
A computer monitor's native "refresh rate" redraws the entire screen @60Hz.
Which is just a fancy way of saying, "60 times a second".
What actually has nothing in common with modern computing, are the "I", or "interlaced" scan types and designations of old.
So, computers were always "p-scan". The "p" suffix had to be tacked onto TV nomenclature to separate it from the old NTSC (now "480i"), 29.97 FPS standard, which was an interlaced scan. (only half a screen is drawn with each pass). Note, that before "progressive scan" was introduced to the TV, that "I", or "interlaced" scan was understood. (At least to TV repairmen and other in the field). Broadcast TV was "640 x 480" resolution, period.
Note that broadcast TV networks and channels have a choice of two different maximum resolution classes, either 720p, or 1080i.