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  1.    #1  
    I know the screen is 320 x 320, but how many pixels per inch???

    I can't find this spec anywhere!

    Thanks for your help!
  2. #2  
    I'm sorry, why you can't just take a ruler, measure the screen side and then divide 320 by the result ?
  3. #3  
    I'm glad someone else said it before I made some sarcastic remark about the obviousness of dividing the resolution by the screen size.
  4.    #4  
    Quote Originally Posted by The Solutor
    I'm sorry, why you can't just take a ruler, measure the screen side and then divide 320 by the result ?
    Easier said than done. In theory, this is a valid approach, but the screen measurement isn't evenly divisable by 320 (no such thing as "part of a pixel").

    Sure, you can "round up" or "round down," but I'm looking for an official spec.

    I'm surprised this isn't published/posted anywhere, as fitting 320 pixels into such a small form factor is an impressive feat.

    Anyone have an official number???
  5. #5  
    Quote Originally Posted by Road Rage
    Easier said than done. In theory, this is a valid approach, but the screen measurement isn't evenly divisable by 320 (no such thing as "part of a pixel").

    Sure, you can "round up" or "round down," but I'm looking for an official spec.

    I'm surprised this isn't published/posted anywhere, as fitting 320 pixels into such a small form factor is an impressive feat.

    Anyone have an official number???
    It's not just theory, though. PPI is quite literally pixels per inch. The screen in 1.8 inches in either direction.

    320/1.8 = 177.77778 pixels per inch

    The operative measurement is pixels, however, not inches - which is why they spec it that way. Pixel size is variable whereas an inch is always an inch. Each Treo pixel is 0.005625 inch in size. Now there's a bit of trivia for you!
    Current: iPhone 3G
    Retired from active duty: Treo 800w, Sprint Touch, Mogul, Apache, Cingular Treo 650, HP iPaq 4350, T|T, M505 - Nokia 3650 - SE R520m, T610, T637, Moto P280, etc, etc...
  6. #6  
    Quote Originally Posted by Road Rage
    Anyone have an official number???

    I think that nothing is more "official" than mathematics
  7.    #7  
    Quote Originally Posted by phurth
    It's not just theory, though. PPI is quite literally pixels per inch. The screen in 1.8 inches in either direction.

    320/1.8 = 177.77778 pixels per inch

    The operative measurement is pixels, however, not inches - which is why they spec it that way. Pixel size is variable whereas an inch is always an inch. Each Treo pixel is 0.005625 inch in size. Now there's a bit of trivia for you!
    Is 1.8 inches the actual VIEWABLE SCREEN (i.e. - pixels that "light up") or TOTAL SCREEN length? This will make a difference on the ppi in the equation if the edges of the screen are being counted as part of the viewable area, but in fact it isn't.

    FYI - I can't check this myself as I have Treo 600, NOT a 650.

    Thanks for humoring me... I'm just trying to find a definitive value.
  8. #8  
    The screen (measured with my ruler) is 1.75" x 1.75" viewable. If you say that you're viewing 183 pixels/inch, you come up with 320.25, so I'd say 183 pixels/inch is about right considering the screen is physically a bit larger than 1.75" x 1.75". Now....what difference does this make other than the resolution is twice that of a Treo 600?????
  9. #9  
    Taking a look at my treo 650 the lit LCD pixel screens actually a hair shy of 1.75" per side. So that would equate to roughly:

    320 / 1.75 = 182.86 PPI

    My best guess would be that it is a 182 ppi screen.

    (ed: I wrote this before the above post above was posted)
  10. #10  
    How will this piece of information change your life in any way?
  11. #11  
    Quote Originally Posted by treo-mike
    How will this piece of information change your life in any way?
    my sentiments exactly

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