Maths - significant digits

[dhulme]

Hi

For my A Level project I'm producing a calculator using 7-segments displays and a PICAXE 18 chip. I am using multiplexing for the displays meaning that the answer needs to be split up into the units tens and hundreds different digits, to be individually sent to displays.

For example, if I have the value 256 stored in w5, I want to split this up into:
2 stored in b0
5 stored in b1
6 stored in b2

Is there a way to do this?

Any help is appreciated,
Thanks in advance,
David

 

[Janne]

Hello dhulme,

I think "bintoascii" command would do the trick.

 

[eclectic]

David.

Have a look at this thread, as a starter.

http://www.picaxeforum.co.uk/showthread.php?t=5841&highlight=digit*+split

Look at the mathematical expressions in Manual 2, for further info.

e

 

[eclectic]

Another answer, for background.

Posts 4+5 in this thread

http://www.picaxeforum.co.uk/showthread.php?t=10939&highlight=hippy

e

See current manual 2, page 20

 

[dhulme]

Thanks for the help and quick response, I'll know where to come for future Picaxe problems Thanks again, David

 

[dhulme]

One more question, is there a way to identify the number of digits the answer has?

 

[BeanieBots]

assuming 'number' is b0,

if b0 > 9 then
more than one digit
endif

etc. etc.

 

[eclectic]

One more question, is there a way to identify the number of digits the answer has?

Yes.
One method would be to check if b0 or b1 or b2 were >0,
and then go from there.


See if you can work out the rest.

e

 

[dhulme]

thanks - didnt realise it was that simple lol