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In this problem a circuit has been set up to mimic a simple adding machine but the logic gates have all been set to AND by mistake.
By clicking on the blue squares you can change the type of logic gates.
There are three switches which you can turn on or off. There are two bulbs: one on the right and one on the left.
Can you find the combination of gate types such that:
What do you think that this circuit represents?
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