Electronic – 2-bit adder implementation


How can I implement this 2-bit adder circuit:



Onto http://www.neuroproductions.be/logic-lab/ or logic.ly?
After several attempts (and in spite of the half adder and full adder working) I cannot seem to get this adder working.

Here is the half adder & full adder:

Half Adder & Full Adder

Best Answer

It worked fine in the free online version. The only goofy thing was that I had to use these 3-to-1 outputs to get it to allow the output of one gate to go to multiple inputs of the next stage.

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