Need Help with Alphanumeric Displays

Gorilla

I am using 14 segment alphanumeric displays they are common anode and I use 220 ohm resistors on each of the cathodes and the anodes are connected to npn transistors which are hooked up to 74hc595 shift register and to 5 volts. I plan to use two more 74HC595 shift registers to control the cathodes at a later time but I am not sure if this is possible.

14 Seg Display.bsp

I need a little help with writing the program, and maybe the circuit itself. I made a very crude schematic with MS Paint.

Clive Wakeham

The Basic Stamp 40P can only source or sink 60ma per 8 pins, and you have up to 14 segments generating up to 20ma(?) per segment. You will burn the stamp out.

You will need a LED driver chip. http://www.maxim-ic.com/datasheet/index.mvp/id/3410
http://www.maxim-ic.com/datasheet/index.mvp/id/3540 -- I2c compatible.