On Tue, 9 Feb 2010, Josh Koffman wrote:

> Hi all. I'm thinking of a project where I'll have a 9 bit binary
> number, and I'll want to display it on a 3 digit 7 segment display. To
> do this I'll need to extract the hundreds, tens, and ones digits from
> the number. The PICList.org website has an 8 bit version to do this
> (http://www.piclist.org/techref/microchip/math/radix/b2oth-8b3d-jsv.htm).
> Has anyone seen a 9 bit version (or a higher bit version that's easily
> foolable, I guess up to 16 bit would be easy)?
> 
> Binary maths and translations aren't my strong point so I'd love to
> see an example rather than trying to write one myself.

Multiprecision arithmetic is a pretty fundamental aspect of 8 bit 
processors. I would strongly recommend that you learn to be comfortable 
with it. Having a good reason to learn something helps. You've got one now 
so take advantage of the situation and learn to do 16 bit addition and 
subtraction.

Friendly Regards
Sergio Masci
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