Driver for a 2 digit 7 segment display
By far the best and cheapest way to drive seven segment displays such as this is to use multiplexed drivers like the AMS AS1108 4 digit or the Maxim MAX7219 8 digit constant current drivers even if you only need a couple of displays. If you have other indicator needs then of course they will also drive lots of LEDs in the other digit positions.




Both use a single resistor to set the segment currents. Both drive Common Cathode displays. Both support a simple serial drive from something like an Arduino.

By the way, these things are really ridiculously cheap as made up units on Ebay and Amazon where you get an 8 digit MAX7219 module for less than $2 ...that's less than the price of the chip alone on Mouser or Digikey.
I've bought dozens of these and really like the TOOGOO unit which has about the best build quality I've seen.

The AMS chip is SOIC only, but the MAX7219 is available in DIP packaging, though if you buy a complete 8 digit solution you get it all on an easy to use PCB.