File talk:Vector Video Standards.png
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NTSC is neither 720x480 nor 3:2.
It's 4:3. The "pixels" aren't normally square, but...
NTSC is ANALOGx485, normally rounded down to ANALOGx480.
So the height is normally 480. When in digital form, the width is commonly 720, 704, or 640. Low-cost or high-density storage formats can use half of a normal width.
Some of the other formats are wrong too, like CGA. CGA also did 640x200 black-and-white. EGA could do 640x350 in 16-color graphics mode. All these were 4:3 ratio.
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