[A83] Re: lcd driver
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[A83] Re: lcd driver
Besides the size, do you really think it's that much cheaper? I seem to
remember the 86 being around $120, and the 83 being $80 (when they first
came out), but there's got to be a lot more to it than the LCD. I wouldn't
think the difference in price would be more than about $0.50 per unit. Now,
I do realize that every penny you save on hardware amounts to a lot when you
are selling hundreds of thousands or millions of units, but I don't see it
being directly proportional to the increased price of the calc.
> An lcd driver is always used if you have an lcd. The difference is only
> how
> you communicate with it.
> On the 83 you have to go via two dataports, on more expensive calcs, with
> more advanced lcd drivers (85, 86, 89, 92) you can write to a special
> memory segment that is dedicated to the lcd driver, where it automagically
> reads the image data.
> The difference is most probably only price. the 83 is supposed to be a
> cheap calc, that most people can afford, and thus they choosed a simpler
> cheaper lcd driver.
> the simpler lcd driver in the 83 also allows for a more simple hardware
> design, making the design cost slightly lower too.
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