At 8:23 PM +0100 8-04-00, Chuck Atwood wrote:
>> How many colors (greys) can display each of this 5 depth?
>>
>
>Bits implies base 2:
>2^1 2
>2^2 4
>2^4 16
>2^8 256
>2^24 too many (16,777,216)
...subject to hardware limitations, of course.
i.e. the Palm IIIc LCD controller display allows only 16 levels for each of
the sub-pixels. So while it's true that there are 256 available entries in
the colortable, the entire color space consists of only 4096 unique colors,
and only 16 of those are 'gray' values.
The LCD itself in the IIIc uses as 12-bpp 'direct' color interface. So
again, only 4096 colors are possible, and no more than 16 levels of any
particular color.
The software of course does not make this distinction. RGB values are
always 24 bits (8 red, 8 green, 8 blue), for generality.
--Bob
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