PALM - The rebirth of Palm Inc. Message Board

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Technology Stocks : PALM - The rebirth of Palm Inc.

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To: David E. Taylor who wrote (4360)	3/22/2001 10:41:42 AM
From: Daniel	Read Replies (1) of 6784

4086 colors on the iPAQ? You're right of course, should be 4096 colors, and I know better. Typo by me? Nope, copied from Compaq's website without thinking Actually, I just meant to point out the mismatch between 8 bits and 4096. (4096 values cannot be encoded in 8 bits. If it's 4096 values, it's (at least) 12 bits; if it's 8 bits, it's (at most) 256 values.) ... I'll confess I'm not sure why Compaq is using an 8 bit/4096 color screen, when they have the horsepower and OS to drive 16 bit/65,536 colors, unless they opted to use that horsepower to drive the higher 240x320 resolution. Processing horsepower to deliver enough data for that number of colors isn't the only thing needed. You also need sufficient display hardware (electronics and LCD). Maybe they chose cheaper LCD driver circuits (three 4-bit digital-to-analog converters instead of two 5-bit and one 6-bit DACs). Or maybe they're admitting that their LCD can't really produce more than 16 levels of each color (16 x 16 x 16 = 4096). Daniel

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