Need help with calculator!

Hi, I am working on a simple pocket calculator movie and although I have some experience with Actionscript 2 but I must produce the calculator using Actionscript 3.

I have found an old example posted on this forum here ( but)but I would need some assistance on how to accomplish the same thing using Actionscript 3.

Can someone point me to an updated example that uses Actionscript 3 or post some code which could point me to the right direction?