>I would like to know how many colors i can display on the Palm IIIc
>(simultaneous) ? and the Palm m505 ?

On a Palm IIIc device (or other 8-bit devices), you've got an 8-bit
palette, so you can show 256 different colors at the same time.  By
changing the selection of colors in the palette, you have access to a
larger number of colors than just 256... but not at the same time.

On a Palm m505 device (or other 16-bit devices), you could theoretically
show 65536 different colors, but there aren't that many pixels on the
screen; there's 160x160=25600 pixels so the answer to your "maximum colors
showing at once" question is constrained by the size of the screen.  But a
320x320 screen such as the new Sony Clie could show all 65536 at the same
time, though I'm no expert on that device and so don't hold me to that.

Sometimes there are other constraints imposed by the screen hardware, like
some screens can only show 8 different intensities of blue, 8 of red, and 4
of green.  That would still work out to being 256 different colors, though
you couldn't have them all be shades of blue.  This isn't Palm-specific at
all; this is just how screens work on computers.

-David Fedor
Palm Developer Support

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