On Aug 19, 2005, at 7:03 PM, scott larson wrote:

> I just made a 5x7 LED matrix display driver using a PIC16F84A, but i
> can't fit each letter of the alphabet into the chip due to the small
> memory...

Really?  5 bytes per character, right?  40 characters gives you
most of what you need; add 26 if you want lower case.  96
or so is all of printable ascii, and should fit in just a bit
over half the available memory (not that upgrading beyond an 84a
isn't a good idea anyway...)

Old computers used to use "radix 40" for symbols and things,
since you could get 6 characters in 32 bits (now you know where
6-character filenames came from!)

I have a project in mind to drive some dot-matrix LED displays
from a PIC; I was hoping I'd get away with a pretty tiny PIC;
did you find something I'm missing?

BillW

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