Sparkfun just released these really nice looking seven segment displays: http://www.sparkfun.com/commerce/product_info.php?products_id=9214
Here is the datasheet: http://www.sparkfun.com/datasheets/Components/C4727JS.pdf
I'm a little confused on how to wire these up to the MAX7221. Whats confusing is all 4 digits shar the same anodes and only differ by the cathodes.
So assuming I need 4 rows (4 digits). Are all the SEG lines connected for the 4 rows and the only difference is the DIG lines which are connected to the anodes. Like this?: