Hi Sam50!
Are you trying to implement that in multisim? Or you trying to implement it in Real Life?
There is an IC that helps you do it, its a BCD 7 Segment converter, this one has the common number 7447 or 7448 depending on the signal you are using (low or high).
There is also the 4511 for that purpose.
There are a couple of web pages you can check to see more about the circuit:
Hope this info helps. Have a great day!