Paul Hutchinson wrote:
>
> Not what you were asking for but maybe this will help.
>
> There is an example circuit for driving 2.3 inch, 8 Volt, AND2307SLC
> common-cathode displays in this data sheet.
>
> http://pdfserv.maxim-ic.com/arpdf/MAX7219-MAX7221.pdf

They have a negative rail, which I was hoping to aviod.

I was just hoping for a decription of transistors needed and where they
have to go. i was assuming that a PNP type would be needed, but, really
I have no idea.

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